If he's back for Utd, do we go back to 4-3-3 and keep Gomez in midfield?
Tough decision. If he starts that game but breaks down, we then have a real problem for the Cup tie. Of the two games I think the Spurs one is more winnable in the first place and I'd like to see us progress in the Cup. Win or lose against Utd, it's the other 16+ league fixtures we have left that will have a bigger impact on our final position in the table.
I'd be tempted to have him on the bench against Utd with a plan to bring him on for Doucoure around the 60 minute mark - the purpose being to give him 30 mins and to create a rest for Doucoure, allowing both of them to be ready to start against Spurs.
One thing is certain: we have REALLY missed Allan. We can't deploy a 4-3-3 without him and we've been incredibly lucky that Doucoure has stepped up in his absence.