My Guess:
Neuer
Rafinha Martinez Dante Alaba
Lahm
Robben Schweni Kroos Ribery
Mandzukic
Guardiola will not play Mandzukic upfront. He will play similar to the match against ManCity. That is why Mandzukic seems to react pissed like he somehow did Tuesday and yesterday. And I do not think that his performance in this two matches will earn him a starting spot... - and he is out of the run he had at the start of the year. I do not think that Guardiola thinks to win the match by headers... - that were the only advantages Mandzukic had... his run and his headers.
Another one that wants to loose 0:3 because of playing players that are not eligible...
Dante is booked and for sure will miss out. So Boateng and Martinez will be the defender pair. Both were rested at the weekend - as well as Alaba.
Kroos and Müller were fully rested at the weekend, too - Müller was not even subbed in.
It probably will be this
Neuer
Rafinha Boateng Martinez Alaba
Lahm
Robben Schweinsteiger Kroos Ribery
Müller
or this
Neuer
Lahm Boateng Martinez Alaba
Schweinsteiger Kroos
Götze
Robben - Müller - Ribery
The only question will be if he will play with Lahm as a right back - then Götze will play behind Müller and it will be more of a front four or a 4-2-3-1 or 4-2-4 or with Lahm in defensive midfield - then it will be a 4-3-3
The blueprint for that was seen last Tuesday - even if they played without Ribery. Götze, Müller and Robben were all playing false nines - or 10s - falling back into midfield helping with the build-up and getting into forward positions. Very fluid and hard to defend as they were always out of the grip of the defenders.
Oh - and actually - Robben and Ribery always track back...
- else they would not play...
If you want to look what you might expect in regards to tactics - get yourself the first half of the Hertha - Bayern match of last Tuesday. Rojadirecta has downloads of it.