Arsenal boss Arsene Wenger has confirmed that midfielder Tomas Rosicky has suffered a new injury.
The 35-year-old made his long-awaited comeback from injury in the FA Cup against Burnley on Saturday but is now expected to be on the sidelines for at least one month.
England's Danny Welbeck and Jack Wilshere are scheduled to be back at the end of this month and in March respectively.
"The team news is that we have all the players that played on Saturday available again," Wenger explained.
"We have to assess one or two. Overall the situation looks quite good for everybody else.
"The only problem we have is that we lost [Tomas] Rosicky through injury.
"He has a thigh problem - a muscular tendon problem, but we don't know how bad it is. It happened three or four minutes after he came on and we have to assess him today. He's not available for a while. We will know much more tonight.
"He [Jack Wilshere] is looking good. I had a short chat with Roy Hodgson about him and reassured him that he is progressing well. I'm cautious but I will say four weeks [until he is back].
"Danny [Welbeck] has not played since April 2015 and will have to go through a game or two with the under-21s, where we can monitor him and leave him free to play at his level of commitment. That looks to be very soon, maybe this week."
