Wenger has described his relationship with the Manchester United manager as a "little bit of comedy" and the bitter barbs he delivers are invariably done with a mischievous smile.

But talk of the "prettiest wife" and pizzas is secondary when it comes to the serious business of football, as shown in the recent Premiership duel when Wenger took the head-to-head lead.

The Arsenal boss described the last-gasp 1-0 victory as "the most satisfying" of the four wins he has enjoyed at Old Trafford.