Chelsea vs Bayern - I like to watch Lampard's Chelsea, but they aren't ready to eliminate Bayern yet
Everyone underestimate Chelsea under Lampard as not ready, one thing you should know that everytime you got underestimated.... there's a bigger motivation to prove that everyone wrong 
, this is football though. A team with odds @5000 won the premier league in 2015-2016, leicester city.
A team with odds @50 to win UCL in 2012 , chelsea they did it underestimatedly.
What else could possibly turn unexpected?
Leipzig to win UCL? Why not?
This is the underdogs year!
And everybody prolly forgot the history between these two in the CL. Remember when (and where) they faced each other during the 2011/12 final? Lololol.
Besides the history says it all , look at both situations ... chelsea and Bayern munich both in not good form , Bayern munich rarely to lost 2 games in a row in Bundesliga and they even fall down to 5th position by now.
Chelsea also lost 2 games in a row in epl , nearly approached the second place they slipped to lost 9 points in 4 games.