The 24-year-old limped off against Aston Villa on Wednesday and it was feared he had broken his leg.
Vermaelen could now even feature against Manchester United on Sunday.
Manager Arsene Wenger told Arsenal’s official website: “There is no fracture in Thomas’ leg but his injury still has to be assessed.
“There is still a good chance he will not play on Sunday.”
“Eduardo has a small, small, small hamstring,” he added. “He will be out for one week. He will not make Man United but he might make Chelsea.
“However Emmanuel Eboue and Alex Song have been in this morning. Eboue has been running outside.
“They are both in good shape. Tired but in good shape. Both of them are available for Sunday.
“Unfortunately Abou will not be back this weekend but he could be for Chelsea.”
