Arsenal captain Cesc Fabregas is facing a fortnight on the sidelines with a hamstring injury.
Fabregas has been plagued by a hamstring problem throughout the season and suffered a further blow on Tuesday night when he was forced off during the 2-0 Champions League defeat to Braga.
And even though it was not the same hamstring that has been troubling the Spaniard in recent months, manager Arsene Wenger admits he will be more wary of risking his skipper in future.
Wenger said: “Fabregas will be assessed (on Thursday) with a scan. After that we can tell you how long he will be out, but I count two weeks.
“It is a big blow because it will question how cautious we have to be in the future with him. Cesc has played 50 games a year since a young age. We may have to be more cautious with him, especially in the next two months.”
Fabregas was not the only injury blow the Gunners received in that match, with Emmanuel Eboue suffering a knee injury that could keep him out for a lengthy spell.
Wenger continued: “Eboue has a medial knee ligament strain. It can be four weeks, can be six weeks or can be eight weeks. But I think it will be four weeks minimum.”