Cesc Fabregas suffered a hamstring injury in Arsenal's 3-1 defeat of Burnley.
Gunners boss Arsene Wenger admitted the loss of Fabregas was a concern, the skipper leaving the field just after he had fired Arsenal into the lead.
"He has a hamstring problem and how big the damage is we don't know yet because it's too early.
"We have to make a late decision over whether he plays on Tuesday, certainly. It is the same hamstring [he hurt earlier in the season]."