Alex Oxlade-Chamberlain is facing surgery in the summer if Arsenal are unable to get to the bottom of his continued groin problems.
The 21-year-old last played on 9 March in the victory over Manchester United at Old Trafford and was initially ruled out for a month - he was due for a return around now but has suffered a further setback and will be out for at least another two weeks.
Arsenal believe the midfielder will play again this season but he is facing an important couple of weeks; if he suffers another setback Arsenal may have no option but to send Oxlade-Chamberlain for surgery.
Arsenal's injury list
Arsenal's injury list
1/5 Mikel Arteta (midfield)
Like Diaby, the Spaniard is closing in on a return but the Swansea match will come to soon. The club captain last played in November.
2/5 Mathieu Debuchy (defender)
Returned in the FA Cup semi-final win over Reading but has since been ruled out with injury and Wenger confirmed he remains 'unavailable'.
3/5 Alex Oxlade-Chamberlain (midfield)
Suffered a hamstring injury against Manchester United in the FA Cup and hasn't played since as it has exacerbated a groin problem. Out at least until May and facing surgery in the summer.
4/5 Aaron Ramsey (midfield)
Aaron Ramsey caught a kick on his calf during the win over Hull and was later substituted. The Welshman was rated 50/50 for the Swansea match by Wenger, but it now appears that he is a major doubt for the clash at the Emirates.
5/5 Danny Welbeck (forward)
Danny Welbeck has not played since the goalless draw with Chelsea towards the end of April after suffering a knee injury. Wenger has confirmed that the injury is 'nothing major', and that he should return to full fitness before the end of the season.
"It is taking a bit longer than I thought because he has a groin inflammation. It is related to everything before," said Wenger.
"I hope it does not become a long-term problem, but he faces a hurdle this week in training. We will see if he has recovered well.
"The end of this week and the start of next week are important to see if he got rid of that inflammation. It is not his hamstring anymore. It is groin inflammation."
There is good news for the Gunners however, with Wenger stating that he expects Mathieu Debuchy, Jack Wilshere, Mikel Arteta and Abou Diaby to all be fit for the Gunners' Premier League match at Burnley on Saturday.
Laurent Koscielny and Wojciech Szczesny will both face late fitness tests for the game.
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