The two sides have already secured qualification from Group D, with the latter boasting a perfect record of five wins from as many matches thus far.
Yet Pellegrini's men are eager to atone for a 3-1 defeat to Bayern at the Etihad Stadium in October, which saw the reigning champions produce a dominant display.
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David Silva is set to return from a calf injury for City, having last featured in a 5-2 win over CSKA Moscow on November 5.
However, Pellegrini will have to cope without left-back Gael Clichy, in addition to fellow injury victims Matija Nastasic and Stefan Jovetic, and the suspended Yaya Toure.
"Gael Clichy has a problem with his foot. It's not serious, but he could not travel," added City's Chilean manager.
"I think he will be ok for Saturday [when City host Premier League title rivals Arsenal, Clichy's former club].
"Nastasic and Jovetic [both calf] have also stayed behind, but all the other players are available, apart from Yaya Toure."
Tuesday's match sees Martin Demichelis return to Bayern, a club he spent more than seven years with earlier in his career.
"We have to play with real fire in our stomachs," added the 32-year-old defender.
"It's a great team we're playing and this is great preparation for us. I played here for seven and a half years and experienced a lot. Tomorrow is a very emotional day for me."