Bayer Leverkusen coach Roger Schmidt knows the threat Tottenham pose in the Champions League - because he witnessed their victory over Manchester City.
Schmidt was scouting in the crowd earlier this month as Spurs took Pep Guardiola's side apart at White Hart Lane with a convincing 2-0 victory.
They now face Leverkusen at the BayArena on Tuesday in what is a crunch match in Group E, with the German side sitting third and only two points behind their opponents.