Tbh, I don't think the chances of him leaving in this or the next season would be high.
Firstly, he's got a long term contract and some keen competitors like Man U and Bayern seemed to have found solutions to their problems.
Man U bought some dude called Lindegaard as a replacement for Van Der Sar (while lindegaard's quality remains to be seen and i seriously doubt he would turn up as good as neuer) and Bayern kinda turned to their youngster Kraft for the remaining season, so if he turns out to be promising, they won't exactly need Neuer especially for that hefty price tag that comes with it and again i can't picture Neuer being in Spain or Italy