Former Chelsea star Terry Venables says they must be wary of Bayern Munich star Arjen Robben tonight.
Robben is eyeing Champions League revenge on his old club.
Venables told The Sun: "He will be out to show his old club what they are missing and he has the potential to be a match-winner.
"He is a clever player who has the ability to ghost into dangerous positions and cause damage. He will need to be watched closely."