Mark Lovell looks at the talking points ahead of the Bundesliga's standout fixture as Bayern Munich travel to Gelsenkirchen to play Schalke 04 at the weekend.
Keller in crisis
The heat is on for Schalke and coach Jens Keller. Schalke were bundled out of the DFB-Pokal by third-division Dynamo Dresden and a sloppy opening league defeat to Hannover increased the pressure on Keller. Respected German weekly Sport Bild has claimed that Keller is even thinking of throwing in the towel.
Can Keller survi...