Jack Wilshere is unlikely to be fit in time to feature in Arsenal's crucial Champions League tie against Borussia Dortmund tomorrow.
Wilshere was absent for the Gunners' win against Liverpool over the weekend as he continues to struggle with an ankle injury.
The 21-year-old was left out of Arsenal's 2-0 win over Crystal Palace late last month after he failed to shake off the complaint, but returned to feature in the Capital One Cup loss against Chelsea.
If there is a silver lining for Wilshere and Arsenal, it is that the problem is in his left ankle, and not on the right which was one of a host injuries that caused him to miss 18 months of football.
What is worrying for Arsenal is the amount of time it is taking Wilshere to recover from the injury which seems to stem from the knock he picked up in the 2-1 defeat against Borussia Dortmund at the Emirates Stadium - which he then aggravated in training on Thursday.
"I will follow the medical advice [on Wilshere]," Arsenal boss Arsene Wenger has said.
"He came in on Friday and was not available. We kept him out of the training. On Saturday he had a session but inside on the bike and we will see on Monday morning how he is."
Arsenal will likely to go into the game without full-back Kieran Gibbs, who picked up a calf strain against Liverpool, as well.
There was some good news for the Gunners however with Theo Walcott on course to be fit for their game against Manchester United at the weekend.