Naby Keita is looking forward to reuniting with his "big brother" Sadio Mane at Liverpool next season.
Upamecano joined Leipzig on a four-and-a-half-year deal from RB Salzburg in January.
Lewandowski, 29, suffered the injury during Bayern's win over RB Leipzig on Oct. 28 and was substituted at half-time.
The ESPN FC panel assess the success of VAR's implementation and how it has been received so far.
Lutz Michael Frohlich, Germany's new VAR project manager, has rejected the idea that a recent match in the Bundesliga might have been manipulated.
Dortmund are all but out of the Champions League and have lost the Bundesliga leadership to rivals Bayern Munich.