The former Mainz manager wants the winger to put the Bundesliga title rival to the sword in Sunday's Der Klassiker.
Borussia Dortmund coach Thomas Tuchel is hopeful Marco Reus can return to his best form against Bayern Munich in Der Klassiker.
The Germany forward made it four matches without finding the net as he turned in a lackluster display in Thursday's 1-1 draw against PAOK in the Europa League.
Reus, 26, has consistently struggled with injuries over recent years and was sidelined by a toe problem earlier in the campaign.