The Gunners captain aggravated a stress fracture in his lower back on international duty with Belgium that ruled out of the club's pre-season tour of Asia last month.
He told reporters at a press conference this afternoon: "It is mostly good news because everyone is quite fit.
"Vermaelen is out for six more weeks. [Nacho] Monreal will start training on Monday."
Arsenal continue their pre-season preparations by hosting the Emirates Cup this weekend, with games in successive days against Napoli and Galatasaray.