He has put off an operation until after the seasaon ends and returns to light training in a bid to return to the Liverpool side within a fortnight.
"I started light training again at the weekend and did a bit of ball work," he said. "It's just a case of gradually building up.
"I hope it will be a maximum of 10 days before I start full training with the lads again, then I can think about playing.
"I've had treatment in Germany, but the only way to get rid of it is to have an operation. I will have that at the end of the season."