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) Which young Arsenal striker has scored six goals in eight games for England's Under-19s and made his Premier League debut this season?
2) Which Villa youngster scored an own goal last season when he swung and missed with his right foot and the ball hit his standing left leg?
3) Name the two English 21-year-olds who have scored PL goals for Cardiff this season.
Steven Caulker and Jordon Mutch.
4) Name two of the three English Chelsea youngsters currently on loan at Championship clubs.
Josh McEachran (Watford), Nathaniel Chalobah (Nottingham Forest) and Todd Kane (Blackburn).
5) Name either of the two English 22-year-olds who have scored PL goals for Crystal Palace this season.
Dwight Gayle or Stuart O'Keefe.
6) Ross Barkley had loan spells with which two Championship clubs last season?
Leeds United and Sheffield Wednesday.
7) Which Fulham defender became the PL's youngest-ever player at 16 years and 65 days old in May 2007?
8) England international Jake Livermore is on his seventh loan spell at Hull City. Can you name any of the other six?
Milton Keynes Dons, Crewe Alexandra, Derby County, Peterborough United, Ipswich Town and Leeds United.
9) Which Liverpool youngster made his league debut on the final day of last season at the age of 17?
10) Who is the youngest Englishman to play for Manchester City in the Premier League this season?
Jack Rodwell (22).
11) In which country was Wilfried Zaha born?
12) Who is the flame-haired Newcastle striker currently playing for England's Under-19s?
13) Nathan Redmond replaced which player in England's Under-21 European Championship squad after he contravened FA rules on betting?
14) Name two of the three English 18-year-olds already used in the PL by Southampton this season.
Luke Shaw, Calum Chambers and James Ward-Prowse.
15) How old is Ryan Shawcross - the youngest Englishman to play for Stoke this season?
16) Which Sunderland manager thought Connor Wickham was worth £8m of the club's money?
17) Which two Liverpool players did Jonjo Shelvey assist in a 2-2 draw earlier this season?
Daniel Sturridge and Victor Moses.
18) Which Premier League club did Tottenham's beanpole striker Harry Kane join on loan last season?
19) In which country was West Brom striker Saido Berahino born?
20) The son of which former West Ham player has made his PL debut for the Hammers this season at the age of 19?
Rob Lee (his son is Elliott).