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) Arsenal signed goalkeeper David Ospina from which club for a reported £3m fee?
2) Aston Villa summer signing Philippe Senderos had loan spells at which two clubs during his time at Arsenal?
3) Burnley summer signing Matt Taylor started his career and made over 100 appearances for which English club?
4) Which full-back left Chelsea to join Sheffield Wednesday on a free transfer this summer?
5) With which club did Crystal Palace summer signing Fraizer Campbell win Premier League promotion in 2008?
6) Everton broke their transfer record on the signing of Romelu Lukaku for £28million. Name their previous record signing from a Premier League club?
7) Which of Hull City's summer signings rejected a trial at Barcelona prior to life in English football?
8) Leicester broke their transfer record with the signing of Leonardo Ulloa. Who previously held it?
9) Of Liverpool's permanent signings this summer, which player is yet to receive a full international cap?
10) Prior to Frank Lampard, who was Manchester City's last loan signing?
11) At which Russian club did Manchester United's Marco Rojo spend a season before joining Sporting Lisbon?
12) Newcastle signed Jack Colback from Sunderland this summer, who was the last player to switch either way between the two Wearside clubs?
13) Against which country did QPR signing Leroy Fer score his first goal for the Netherlands at this summer's World Cup?
14) Name Southampton's two loan signings so far this summer and the clubs they have arrived from?
15) Other than Barcelona, name the three clubs Stoke signing Bojan has played for since making his debut in Spain.
16) Name the defender Sunderland re-signed on loan for the season after originally joining last January.
17) Name the four English teams Swansea's Gylfi Sigurdsson has played for.
18) From which club did Spurs sign DeAndre Yedlin?
19) Which player was West Brom's record signing prior to the arrival of Brown Ideye?
20) West Ham signing Enner Valencia scored how many World Cup goals for Ecuador this summer?
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