The Swiss FA posted a statement on their official website suggesting a more positive prognosis than Arsene Wenger’s initial post-match comments after Djourou suffered a dislocated shoulder in the FA Cup quarter-final defeat at Manchester United.
The Swiss FA went as far as to suggest the defender could feature in the Euro 2012 qualifier against Bulgaria on March 26, reporting Djourou “had new hope that his season is not over yet” as initial tests showed there were no fractures, while ligament damage was indicated “not to be in a serious condition”.
However, it is understood the 24-year-old is in fact expected to undergo corrective surgery later this week following further scans with Arsenal’s medical team.
The confirmation of Djourou’s absence is another blow as Wenger looks to salvage a campaign which is in danger of falling apart once more.
After suffering Carling Cup final heartache at Wembley, the Gunners then crashed out of Europe in Barcelona before losing at Old Trafford as fighting on four fronts suddenly became just one.
Nevertheless, Arsenal still have the destiny of the Premier League crown in their own hands, just three points behind United but with a match in hand ahead and a crunch showdown with the Red Devils at the Emirates Stadium to come on May 1.
Given Thomas Vermaelen has yet to feature since the end of August because of a niggling Achilles injury, Arsenal will head to West Brom with Sebastian Squillaci set to partner Laurent Koscielny in a defensive pairing which so far has proved less than effective.
Midfielder Alex Song (knee) has already been ruled out, while captain Cesc Fabregas (hamstring) and England winger Theo Walcott (ankle) are not expected to feature.
Striker Nicklas Bendtner — again linked with a move away from Arsenal, this time to Blackburn — should be available after missing the United trip with sickness.
There could be an old familiar face in the Gunners squad once more this weekend should a deal be completed for Jens Lehmann to make a return.
The former Germany goalkeeper, 41, left Arsenal in 2008 but is in talks over a short-term deal to help the club through an injury crisis, with confirmation of his return expected later this week, probably when Wenger holds his scheduled pre-match press conference at their Hertfordshire base tomorrow.
UEFA, meanwhile, are also set to rule on their disciplinary case against both Wenger and midfielder Samir Nasri.