He's a 'Bright Young Manager', which is meant as a huge compliment, and he's also affable and approachable. It's actually quite difficult to dislike Roberto Martinez...
WhoScored.com look at five sides who, after the opening four matches of the season, seem to have made tactical alterations to their style over the summer...
All deadline day moves are in bold.
INS: Lukas Podolski (£11m, FC Köln), Olivier Giroud (£13m, Montpellier), Santi Cazorla (£16m, Malaga).
OUTS: Rhys Murphy (free, Telstar), Jeffrey Monakana (free, Preston), Tom Cruise (free, Torquay), Joe Campbell (loan, Real Betis), Denilson (loan, Sao Paulo), Gavin Hoyte (free, Dagenham), Manuel Almunia (free, Watford), Benik Afobe (loan, Bolton), Oguzhan Ozyakup (undisclosed, Besiktas), Carlos Vela (undiscl, Real Sociedad), Ryo Miyaichi (loan, Wigan), Wellington Silva (loan, Ponferrada), Kyle Bartley (£1m, Swansea), Robin van Persie (£24m, Manchester United), Alex Song, (£15m, Barcelona), Henri Lansbury (£1m, Nottingham Forest), Ju Young Park, (loan, Celta Vigo), Nicklas Bendtner (loan, Juventus), George Brislen-Hall (free, Inverness).
INS: Brett Holman (free, AZ Alkmaar), Karim El Ahmadi (undiscl, Feyenoord), Matthew Lowton (undiscl., Sheffield United), Ron Vlaar (£3million, Feyenoord), Joe Bennett (undiscl, Middlesbrough), Jordan Bowery (£500,000, Chesterfield), Ashley Westwood (£2m, Crewe), Christian Benteke (£7m, Genk)
OUTS: Emile Heskey (released), Carlos Cuellar (free, Sunderland), James Collins (undiscl., West Ham), Nathan Delfouneso (loan, Blackpool)
INS: Marko Marin (£6million, Werder Bremen), Eden Hazard (£32million, Lille), Thorgan Hazard (undisclosed, Lens), Oscar (£25million, Internacional), Cesar Azpilicueta (£7million, Marseille), Victor Moses (£9million, Wigan).
OUTS: Jose Bosingwa (free, QPR), Rhys Taylor (free, Southend), Didier Drogba (free, Shanghai Shenhua), Thibault Courtois (loan, Atletico Madrid), Salomon Kalou (free, Lille), Patrick van Aanholt (loan, Vitesse Arnhem), Tamas Kalas (loan, Vitesse Arnhem), Rohan Ince (loan, Yeovil), Kevin de Bruyne (loan, Werder Bremen), Ben Gordon (loan, Birmingham), Romelu Lukaku (loan, West Brom), Sam Walker (loan, Bristol Rovers), Sam Hutchinson (loan, Nottingham Forest), Conor Clifford (loan, Portsmouth), Josh McEachran (loan, Middlesbrough), Archange Nkumu (loan, Yeovil), Thorgan Hazard (loan, Zulte Waregem), Nathaniel Chalobah (loan, Watford), Gael Kakuta (loan, Vitesse Arnhem), Michael Essien (loan, Real Madrid), Yossi Benayoun (loan, West Ham).
INS: Steven Naismith (free, Rangers), Steven Pienaar (£4.5million, Tottenham), Kevin Mirallas (£6m, Olympiakos), Bryan Oviedo (undisc, FC Copenhagen), Matthew Kennedy (nominal, Kilmarnock), Vadis Odjidja-Ofoe (loan, Club Brugge).
OUTS: Marcus Hahnemann, James McFadden (released), Adam Forshaw (undiscl., Brentford), James Wallace (undiscl., Tranmere), João Silva (free, Levski Sofia), Tim Cahill (nominal, New York Red Bulls), Joseph Yobo (£2.5m, Fenerbache), Connor Roberts (free, Cheltenham), Jack Rodwell (£15m, Man City), Jack Bidwell (loan, Brentford).
INS: Mladen Petric (free, Hamburg), Sascha Riether (loan, Cologne), Hugo Rodallega (free, Wigan), Kieran Richardson (£2m, Sunderland), Chris David (undisc, FC Twente), Dimitar Berbatov (£4m, Manchester United), Ashkan Dejagah (undiscl, Wolfsburg)
OUTS: Andrew Johnson (free, QPR), Danny Murphy (free, Blackburn), Pavel Pogrebnyak (free, Reading), Bjorn Helge Riise, Zdenek Grygera (released), Dickson Etuhu (£1million, Blackburn), Danny Hoesen (undiscl., Ajax), Moussa Dembele (£15m, Tottenham), Clint Dempsey (£6m, Tottenham)
INS: Fabio Borini (£7.8million, Roma), Joe Allen (£15m, Swansea), Oussama Assaidi (£3m, Heerenveen), Nuri Sahin (loan, Real Madrid), Samed Yesil (£1m, Bayer Leverkusen).
OUTS: Fabio Aurelio (free, Gremio), Dirk Kuyt (£880,000, Fenerbahce), David Amoo (free, Preston), Stephen Darby (free, Bradford), Maxi Rodriguez (undisc, Newell's Old Boys), Toni Silva (free, Barnsley), Alberto Aquilani (undiscl, Fiorentina), Henoc Mukendi (loan, Northampton), Craig Bellamy (free, Cardiff City), Jay Spearing (loan, Bolton), Andy Carroll (loan, West Ham), Charlie Adam (£4m, Stoke), Nathan Ecclestone (undiscl, Blackpool).
INS: Jack Rodwell (£15m, Everton) Richard Wright (free, Preston), Scott Sinclair (£6.2m, Swansea), Maicon (£3m, Inter Milan), Matija Nastasic (£10m plus Stefan Savic, Fiorentina), Javi Garcia (£16m, Benfica)
OUTS: Owen Hargreaves (released), Gai Assulin (free, Racing Santander), Andreas Mancini (free, Real Valladolid), Joan Angel Roman (undiscl, Barcelona), Greg Cunningham (undiscl, Bristol City), Wayne Bridge (loan, Brighton), Omar Elabdellaoui (loan, Feyenoord), Vladimir Weiss (undisclosed, Pescara), Stuart Taylor (free, Reading), Emmanuel Adebayor (£5m, Tottenham), Adam Johnson (undiscl., Sunderland), Harry Bunn (loan, Crewe), Nigel de Jong (undiscl., AC Milan), Dedryck Boyata (loan, FC Twente), Roque Santa Cruz (loan, Malaga), Stefan Savic (swap deal, Fiorentina, Ryan McGivern (loan, Hibernian).
INS: Shinji Kagawa (£12m, Borussia Dortmund), Nick Powell (£4m, Crewe), Robin van Persie (£24m, Arsenal), Alex Buttner (£3.9million, Vitesse Arnhem).
OUTS: Michael Owen (released), Oliver Norwood (undisclosed, Huddersfield), Matty James, Ritchie De Laet (both undisclosed to Leicester), Tomasz Kuszczak (free, Brighton), Fabio (loan, QPR). Ji-Sung Park (£2m, QPR), John Cofie (loan, Sheffield United), Ben Amos (loan, Hull), Reece Brown (loan, Coventry), Dimitar Berbatov (£4m, Fulham).
INS: Romain Amalfitano (free, Reims), Gael Bigirimana (undiscl., Coventry), Curtis Good (undisc, Melbourne Heart), Vurnon Anita (undiscl., Ajax).
OUTS: Ryan Donaldson, Tamas Kadar (released), Alan Smith (free, MK Dons), Leon Best (£3m, Blackburn), Fraser Forster (Celtic), Peter Lovenkrands (free, Birmingham), Danny Guthrie (free, Reading).
INS: Steven Whittaker (free, Rangers), Jacob Butterfield (tribunal, Barnsley), Robert Snodgrass (£3million, Leeds), Michael Turner (£1.5million, Sunderland), Javier Garrido (loan, Lazio), Sebastien Bassong (undiscl, Tottenham), Alexander Tettey (undiscl, Rennes), Mark Bunn (undiscl., Blackburn), Harry Kane (loan, Tottenham).
OUTS: Adam Drury (free, Leeds), Aaron Wilbraham (free, Crystal Palace), Zak Whitbread (released), Andrew Crofts (undiscl., Brighton), Daniel Ayala (loan, Nottingham Forest), James Vaughan (loan, Huddersfield), Tom Adeyemi (loan, Brentford), George Francomb (loan, AFC Wimbledon)
INS: Ryan Nelsen (free, Tottenham), Andy Johnson (free, Fulham), Robert Green (free, West Ham), Samba Diakite (undisclosed, Nancy), Fabio (loan, Manchester United), Ji-Sung Park (£2m, Manchester United), Junior Hoilett (tribunal, Blackburn), Jose Bosingwa (free, Chelsea), Julio Cesar (undiscl, Inter Milan), Esteban Granero (undiscl., Real Madrid), Sam Magri (free, Portsmouth), Stephane Mbia (£5m, Marseille).
OUTS: Patrick Agyemang (free, Stevenage), Danny Gabbidon (released), Peter Ramage (free, Crystal Palace), Rowan Vine (free, St Johnston), Dan Shittu (free, Millwall) Paddy Kenny (undisclosed, Leeds), Fitz Hall (free, Watford), Matthew Connolly (undiscl., Cardiff), Lee Cook (free, Leyton Orient), Tommy Smith (undiscl, Cardiff) Jay Bothroyd (loan, Sheffield Wednesday), Joey Barton (loan, Marseille).
INS: Garath McCleary (free, Nottingham Forest), Pavel Pogrebnyak (free, Fulham), Danny Guthrie (free, Newcastle), Nicky Shorey (free, West Brom), Adrian Mariappa (undiscl, Watford), Chris Gunter (£2.5m, Nottingham Forest), Stuart Taylor (free, Man City).
OUTS: Brian Howard (free, Portsmouth), Tomasz Cywka (free, Barnsley), Andy Griffin, Jack Mills (all released), Joseph Mills (loan, Burnley), Michail Antonio (Undiscl, Sheffield Wednesday), Mikkel Andersen (loan, Portsmouth).
INS: Jay Rodriguez (£6m, Burnley), Steven Davis (free, Rangers), Nathaniel Clyne (£2.5m, Crystal Palace), Paulo Gazzaniga (undiscl., Gillingham), Emmanuel Mayuka (Undiscl, Young Boys Berne), Maya Yoshida (undiscl, VVV Venlo) Gaston Ramirez (£12m, Bologna).
OUTS: Radhi Jaidi, David Connolly (released), Lee Holmes (free, Preston), Aaron Martin (loan, Crystal Palace), Dan Harding (undiscl. to Nottingham Forest), Lee Barnard (loan, Bournemouth), Jonathan Forte (loan, Crawley), Billy Sharp (loan, Nottingham Forest), Dean Hammond (loan, Brighton).
INS: Jamie Ness (free, Rangers), Michael Kightly (£3m, Wolves), Geoff Cameron (undisclosed, Houston Dynamo), Charlie Adam (£4m, Liverpool), Maurice Edu (undisc, Rangers), Steven Nzonzi (£3m, Blackburn).
OUTS: Danny Higginbotham, Salif Diao, Tom Soares (released), Andrew Davies (free, Bradford), Jonathan Woodgate (free, Middlesbrough), Florent Cuvelier (loan, Walsall), Ryan Brunt (loan, Leyton Orient), Danny Collins (£500,000, Nottingham Forest), Louis Moult (free, Northampton), Ricardo Fuller (free, Charlton).
INS: Carlos Cuellar (free, Aston Villa), Louis Saha (free, Tottenham), Steven Fletcher (£14million, Wolves), Adam Johnson (undiscl., Man City), Danny Rose (loan, Tottenham).
OUTS: Craig Gordon (released), Trevor Carson (free, Bury), Jordan Cook (free, Charlton), George McCartney (undisc., West Ham), Asamoah Gyan (£6m, Al-Ain), Michael Liddle (undisc, Accrington Stanley), Ahmed Elmohamady (loan, Hull), Kieran Richardson (£2m, Fulham).
INS: Jose Manuel Flores (£2m, Genoa), Jonathan de Guzman (loan, Villarreal), Michu (£2m Rayo Vallecano), Itay Shechter (loan, Kaiserslautern), Kyle Bartley (£1m, Arsenal), Jamie Proctor (undiscl. Preston), Ki Sung-Yeung (£5.5million, Celtic), Pablo Hernandez (£5.55m, Valencia).
OUTS: Ferrie Bodde (released), Joe Allen (£15m, Liverpool), Joe Walsh (free, Crawley), Andrea Orlandi (undiscl., Brighton), Scott Sinclair (£6.2m, Man City), Federico Bessone (free, Swindon), Stephen Dobbie (undiscl, Brighton)
INS: Gylfi Sigurdsson (£8.7million, Hoffenheim), Jan Vertonghen (£8m, Ajax), Emmanuel Adebayor (£5m, Manchester City), Moussa Dembele (£15m, Fulham), Hugo Lloris (£8m, Lyon), Clint Dempsey (£6m, Fulham)..
OUTS: Ledley King (retired), Louis Saha (free, Sunderland), Ben Alnwick (free, Barnsley), Niko Kranjcar (£6m, Dynamo Kiev), Ryan Nelsen (free, QPR), Vedran Corluka (undisclosed, Lokomotiv Moscow), Massimo Luongo (loan, Ipswich), Steven Pienaar (£4.5m, Everton), Ryan Fredericks (loan, Brentford), Sebastien Bassong (undiscl, Norwich), Luka Modric (£30m, Real Madrid), David Button (undiscl, Charlton), John Bostock (loan, Swindon), Danny Rose (loan, Sunderland), Giovani dos Santos (undisc, Mallorca), Rafa van der Vaart (£10million, Hamburg), Harry Kane (loan, Norwich).
INS: Ben Foster (undisclosed, Birmingham), Yassine El Ghanassy (loan, Gent), Massimo Luongo (free), Markus Rosenberg (free, Werder Bremen), Claudio Yacob (free, Racing Club), Romelu Lukaku (loan, Chelsea), Goran Popov (loan, Dynamo Kiev).
OUTS: Keith Andrews (free, Bolton), Paul Scharner (free, Hamburg), Somen Tchoyi (released), Marton Fulop (free, Asteras Tripoli), Joe Mattock (free, Sheffield Wednesday), Nicky Shorey (free, Reading), Simon Cox (£2million, Nottingham Forest).
INS: Stephen Henderson (undisclosed, Portsmouth), Jussi Jaaskelainen (free, Bolton), Mohamed Diame (free, Wigan), George McCartney (undisc, Sunderland), Modibo Maiga (£4.7m, Sochaux), James Collins (undiscl., Aston Villa), Alou Diarra (undiscl., Marseille), Matt Jarvis (£10.75million, Wolves), Andy Carroll (loan, Liverpool), Yossi Benayoun (loan, Chelsea)
OUTS: Robert Green (free, QPR), Frank Nouble (free, Wolves), John Carew, Julien Faubert (free, Elazýðspor), Papa Bouba Diop, Abdoulaye Faye (free, Hull), Pablo Barrera (undisclosed, Cruz Azul), Ravel Morrison (loan, Birmingham), Cristian Montano (undiscl., Oldham), Sam Baldock (£1.2m, Bristol City), Nicky Maynard (undiscl, Cardiff).
INS: Fraser Fyvie (£600,000, Aberdeen), Ivan Ramis (undiscl., Real Mallorca), Ryo Miyaichi (loan, Arsenal), Arouna Kone (£2.75m, Sevilla).
OUTS: Chris Kirkland (free, Sheffield Wednesday), Hugo Rodallega (free, Fulham), Mohamed Diame (free, West Ham), Steve Gohouri (released), Hendry Thomas (free, Colorado Rapids), Lee Nicholls (loan, Northampton), Ryan Watson (loan, Accrington), Nouha Dicko (loan, Blackpool), Conor Sammon (undiscl., Derby), Victor Moses (£9million, Chelsea), Roman Golobart (loan, Tranmere).