Barcelona know they must not "let their guard down" after last season's Champions League exit to Roma, according to coach Ernesto Valverde.
The La Liga giants looked set for a semi-final berth after winning the first leg 4-1 at home but capitulated in the Italian capital, going out on away goals after a humiliating 3-0 defeat.
Valverde's side return to knockout action on Tuesday with a visit to Lyon and the Barca boss is confident there will be no such complacency this time out.
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"The learning of Rome is that you should not let your guard down," he told a media conference.