Bayer Leverkusen sporting director Rudi Voller believes their UEFA Cup rivals should be worried after his side´s annihilation of Turkish giants Galatasaray.
Bayer romped to a 5-1 second-leg victory on Thursday night, their first three goals coming in a 10-minute blitz in the first-half, to book their place in the last 16.
Voller told the Bild newspaper: "That was our best first half of the season. When we are at the top of our game, we are very difficult to stop."
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