Jens Lehmann will decide his future at Arsenal before Saturday.
Wolfsburg have expressed interest and Lehmann, 38, said: "I should know more in a week, so that I can make a decision in the first days of the New Year. I've listened to something, but at the moment I can't say much about it."
Lehmann's prospects of first-team action do not look good.
He was dropped after two early season errors and Almunia has thrived as his replacement, while Poland's Lukasz Fabianski has taken over in the Gunners' Carling Cup team.