The Bayer Leverkusen stopper sustained a broken rib in last weekend's 2-1 defeat to Stuttgart and will definitely miss this weekend's visit of lowly Hannover.

The 25-year-old did not require surgery on the injury, though, and is optimistic he will be fit to return the following week.

Low revealed he and goalkeeping coach Andreas Kopke had spoken to Adler and were now awaiting developments.

"Andreas Kopke and I have spoken on the phone with Rene Adler," he said on www.dfb.de.

"We wish him a speedy recovery. We will now wait for the further medical test and the latest development."