By late evening on February 15, the respective seasons of Arsenal and Manchester City could look very different.
Of course, both will be hoping to go all the way in the Europa League and Champions League respectively, with City in particular desperate to break their duck when it comes to the top continental prize.
But with both already out of the League Cup, their two meetings in four games - in the FA Cup on Friday night before their Premier League clash on February 15 - are likely to be crucial in their battle for domestic supremacy.