Germany goalkeeper coach Andy Kopke admits Arsenal goalkeeper Jens Lehmann faces crunch time this month in his bid to make the Euro2008 squad.

After criticism for his performance against Austria, Lehmann will be given a chance to make amends against Switzerland later this month, but Kopke warned: "If he doesn't play well, then things will become even more difficult."

Kopke admits Lehmann is their preferred No1 because of his experience, but his performance against Austria has heaped pressure on coach Joachim Low to make changes.