Vermaelen is an important player in our squad. But there is a chance he'll go later, "Wenger said, as quoted by BBC Sport.
If Vermaelen go, Wenger said, then it will immediately search for a substitute. He acknowledged is currently active in the summer transfer market despite having managed to recruit four players.
The French coach has recruited Southampton defender Calum Chambers, Barcelona attacker Alexis Sanchez, Newcastle right-back Mathieu Debuchy, dankiper David Ospina.
"So far I am very happy what I have done in the transfer market. I'm still going to do more until the transfer window closes on 31 August," said he.