The Forest manager, whose side produced two determined displays to beat Auxerre 1-0 on aggregate in the previous round and so progress as England's sole European representatives, was happy to avoid the big guns of Milan and Barcelona.
But he will not be underestimating Lyon, who beat Lazio, 4-1 on aggregate to reach this stage of the competition. "French football is on a high at the moment," said Clark, whose side are rated at 25-1 by bookmakers William Hill to win the competition. "I don't think anyone should underestimate our achievement in beating Auxerre, who were a talented outfit. Lyon will be in the same mould."
Bayern Munich, 4-1 aggregate winners over Raith Rovers, face Benfica in the tie of the round.
UEFA CUP Third-round draw: Bayern Munich v Benfica; PSV Eindhoven v Werder Bremen; Nottingham Forest v Lyon; Brondby (Den) v Roma; Milan v Sparta Prague; Bordeaux v Real Betis (Sp); Seville v Barcelona; Slavia Prague v Lens (Fr). (Ties to be played 21 November and 5 December).