Arsene Wenger has admitted that Jack Wilshere is currently carrying an ankle injury.
The young midfielder has struggled with a string of injuries in recent seasons and is only now getting a decent run of games.
However he will miss Arsenal's game against Crystal Palace today having taken a knock on his ankle during the Gunners' 2-1 Champions League defeat against Borussia Dortmund in mid-week.
While he played on after that Wenger confirmed he is now struggling, and says it is difficult trying to strike a balance between helping the 22-year-old grow and protecting him from further injury.
“It’s difficult for us to find the right rhythm for him," the Frenchman said. "Before I always played him and people say I overplayed him.
“Now I try to be a bit more cautious. It’s difficult because his ankle is up and down a little bit. He’s getting better but it’s still inflamed sometimes and responds sometimes to games. But after that it goes down again and is normal.
“He will go through this period of stabilisation. It’s going upwards but sometimes you wonder: ‘Do I take a gamble or not?’
“But he’s 22. He needs competition. I do what the medical people recommend with him because I am not a specialist. They are quite positive about him.”
There was some better news for Arsenal fans however with midfielder Mathieu Flamini set to return to action having missed the game against Dortmund with concussion.
Wenger also revealed that Mesut Ozil's subdued performance was because the German was suffering with a bug.