Emirates speedster could be back in a few days but could also be out for months.
Arsenal have described the knee injury to forward Theo Walcott as “minor” and hope to have him back for the Champions League game against Olympiakos.
The 22-year-old pulled up in the dying stages of Arsenal’s 3-0 win on Saturday, with initial fears the winger had pulled a hamstring.
But manager Arsene Wenger has downplayed the seriousness of the problem and hopes the England international will face the Greek side and rivals Tottenham next Sunday.
“I don’t really know (what is wrong),” Wenger said. “I thought it was a classic hamstring but it is not.
“He felt a sharp pain in his knee and at the moment he is with the doctor.
“I don’t know what the diagnosis will be but it is completely surprising. There was no one near him.
“I don’t know what they will do, whether they will have a scan tonight, I will have to speak to the medical people.”
The worrying aspect for the Arsenal fans is this is not the first ‘minor’ injury the Gunners squad has faced that has turned into a long-term problem.
Midfielder Jack Wilshere was supposed to be out for only a couple of days after injuring his ankle in a pre-season game in August.
The 19-year-old will now undergo surgery and will not be back until after Christmas as the problem has failed to heal.
The Arsenal medical staff knew about his weakness and advised England not to pick Wilshere for the Euro U21 Championships because of it.
But instead of putting the player under the knife in the summer, the Gunners tried to let the injury heal itself but will now lose a star player for a long time.
The same issue happened last season with defender Thomas Vermaelen, with the Emirates staff hoping his achilles would naturally heal instead of needing an operation.
The result: Vermaelen underwent surgery and pretty much missed the whole campaign.
Another example is Abou Diaby, who the club instead of operating on his ankle at the start of the summer waited until August.
The Frenchman was supposed to back in September but is still recovering.
Cesc Fabregas, since moving to Barcelona, has shown no sign of the hamstring problems that dogged his Arsenal career over the last two years.
Maybe there is something they put in the Catalan water…
These issues need to be fixed, with big question marks hanging over the Arsenal medical staff and their efforts to keep their stars on the pitch.