Jens Lehmann admits a decision on whether he leaves Arsenal will have to be made in the next week.
"If I am going to switch clubs, then I would have to reach a decision by the start of January at the latest," he said in an interview with Berlin's Tagesspiegel newspaper. "That means in about a week.
"I have heard something, but I cannot say anything concrete about it at the moment."
Lehmann, meanwhile, was the first player out of the Emirates Stadium after the beating Spurs on Saturday.
"Somebody from there has called Arsene Wenger," Lehmann said.
"My lawyer has also spoken with people, but I cannot say which club they are from.
"Things keep moving, so it is hard to talk about it at the moment. I should know more in a week."