Arsenal manager Arsene Wenger is remaining upbeat despite yet another injury worry for Jack Wilshere.

The 23-year-old midfielder is set for further time on the sidelines after it was confirmed earlier on Tuesday that he requires surgery for a hairline fracture in his left leg.

Wilshere has already struggled os much with ankle and leg injuries in the early part of his professional career but Wenger does not believe this particular problem is serious.

"Like every player, he wants to play football and he is disappointed, but he has shown in the past he can deal with that," said the French tactician ahead of Arsenal's Champions League opener against Dinamo Zagreb on Wednesday night.

"I think he was determined to do it quickly and come back as quickly as possible.

"This kind of injury is not a kind of injury which can damage your career. It is just a bone that did not heal well. They need to put a little clip in. That is nothing major, not a career-threatening injury.

"I am not a bone specialist, so I would not like to give too many details. I have been explained the situation, but I leave that to the medical people. There is nothing malicious in there, just a part of his bone that has not healed.

"When you are injured and you come back, you always go through a vulnerable period, where you need to strengthen your body again, to gain competition," he said.

"I think he is young enough to get over that and I hope his body will stabilise, I am confident he will and that he can make a career his talent deserves."