The Dutchman has warned his Bayern team-mates that a difficult match lies in store, and Holger Badstuber and Philipp Lahm can only agree
The Dutchman ended up on the losing side three times out of five when facing Valencia during his time at Madrid, and has nothing but respect for Mauricio Pellegrini's men.
"They're a very good team, not Madrid or Barcelona, but not very far off," Robben was quoted as saying on the club's official website.
Defenders Holger Badstuber and Philipp Lahm are wary of Valencia too, as they feel los Che could cause Bayern problems if they are not at their best.
"They're dangerous. They always cause trouble for the very big clubs in Spain. We'll have to concentrate very hard," stated Badstuber.
"Wednesday will be a proper test. Valencia are a top team, they’re almost always in the Champions League, and almost always one of the best three clubs in Spain. However, we want to go through in first place," added Lahm.
The match at the Allianz Arena is scheduled to kick off at 20:45CET.