Arsenal's surprise January signing Kim Kallstrom could have suffered a potentially season-ending back injury during his first training session with the Gunners today, with Swedish news outlet AftonBladet.se reporting that the midfielder is now facing up to three months on the sidelines.
Kallstrom completed a shock season-long loan switch to the Emirates yesterday, with Gunners boss Arsene Wenger signing the experienced Swedish international as cover for the injured Aaron Ramsey.
The 31-year-old was in contention to make his Arsenal debut against Crystal Palace tomorrow afternoon, but the latest reports from the Swedish press could place the prospect of a single Gunners appearance under considerable threat.
AftonBladet are reporting that Kallstrom suffered a setback during his maiden session with new Arsenal team-mates this morning, although they were unable to confirm this belief during a conversation with Arsenal communications director Mark Gonnella.
Gunners fans will be waiting for official confirmation of what could be yet another injury blow for the Premier League title contenders, who are already without Ramsey and Theo Walcott for a prolonged period.
Wenger is also unable to select Mathieu Flamini for the next four domestic matches through suspension, as the Gunners look to keep their challenge for silverware on track despite making just a single loan addition during the January transfer window.