The Swedish international has left St Andrew's after his contract ran out at the end of last season but says a move back to Arsenal, the club he left in 2007, could be on the cards.
"They [Arsenal] have shown some interest. If it flows it can be anything in the end. The next few days will tell," he told Aftonbladet>
"I know there is some kind of interest but I cannot currently say whether something can be done or not. At the moment I do not know how it is going.
"I'm talking to a couple of the Arsenal players still. In particular, (Gael) Clichy," he added.
"Of course I have also talked to my advisor. For every day that passes, I will get closer to a decision but it is also no stress to me. The most important thing is to get a place that is a good next step in my career. It is the goal."