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...
1) Who was Arsenal's record signing before they smashed that figure by purchasing Mesut Ozil on deadline day in 2013?
2) Name the striker signed by Spurs from Derby on August deadline day in 2005.
3) And the two players they bought from Nottingham Forest on January deadline day the same year?
4) From which team did Everton buy Marouane Fellaini in 2008?
5) What was Kevin Keegan advised to do by Dennis Wise when he asked about Newcastle signing Xisco?
6) Whose reaction was this, after his deadline day 2008 move? "Chelsea made a great proposal on the last day and I accepted...sorry, Manchester."
7) From which club did West Ham sign Carlos Tevez and Javier Mascherano in 2006?
8) Which 2011 January deadline day signing is Alan Shearer talking about here: "It's an incredible amount of money for a guy who's scored 14 goals and had half a season in the Premier League, albeit having done very well and the potential is there."
9) Who was Fernando Torres' first Chelsea goal scored against, some three months after he arrived on deadline day 2011?
10) Who did Wayne Rooney score a hat-trick against on his debut after joining Manchester United on deadline day in 2004?
11) Who did Spurs pay £8million from Real Madrid for in 2010?
12) Which full-back did Liverpool sign on deadline day in August 2010?
13) Manchester City paid £12million for Wayne Bridge in 2009 - how many league starts did he make for them? We'll give you five either way.
14) And which club was he loaned out to on deadline day three years later, where he made three starts?
15) What method of transport did Ryan Babel board in 2010 to attend negotiations for a transfer that didn't happen?
16) Name the four players Arsenal signed on August deadline day 2011.
17) Which deadline day 2010 signing for Sunderland left for Al-Ain a year later?
18) Who did Robbie Keane join on loan on January deadline day 2010?
19) Dimitar Berbatov left Spurs in August 2008, but which striker arrived there?
20) From which team did Middlesbrough sign goal machine Afonso Alves in 2008?
The answers are here...