By Giuseppe Muro

Arsène Wenger is confident of positive news as he awaits results of Kieran Gibbs' scan on his injured knee.

The full back limped out of Wednesday's 4-0 Carling Cup win over Newcastle after just 18 minutes and had the damage to his ligaments assessed by the Club's doctors on Friday morning.

His manager expects the results to be good, though Wenger admitted it is tough to predict how long the 21-year-old will be out."He has a scan today - we do not expect any further damage," he said. "It will be a question of weeks - is it two or is it four?

"It is difficult to know when it's a medial knee ligament. Gibbs is one of the players I still do not have integrated in my mind that he is out [of the West Ham game] but he is unfortunately."

Ahead of the Premier League game on Saturday the Frenchman said Gibbs is his only fresh concern but admitted there will be no players returning from injury. He did however have positive news on the progress of Aaron Ramsey and Robin van Persie.

"We have available the players who played at Newcastle and those who were rested after playing at Manchester City. We don't have any other players coming back.

"That means Almunia, Van Persie and Vermaelen are still out. Diaby is still out of course.

"Ramsey is in full training at the end of next week and Van Persie as well. Almunia is more difficult to know - one or two weeks maximum."

Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 29 Oct 2010