Always loved the banter scene in the dressing room:
DUNCAN: Listen to this, Bobby - the Kings of Romance here!
DAVID: I do fine playing field. [blows kiss]
EDDIE: Listen to him, thinks he's Casanova
and the actors all spent a lot of time together off set, visiting the Manchester United Museum in Old Trafford + football training together for practice + to build chemistry as well as get to know their characters.