Olympique Lyon coach Bruno Genesio accepts they must be "perfect" to upset Champions League opponents Manchester City tonight.

Lyon open their campaign at the Etihad.

Genesio stated: "It will take a lot of favourable parameters.

"City is ultra favorite of this group, it is the strongest team. It will be necessary to make the perfect match, to have success and luck in the football everything is possible it is what makes its charm.

"It's up to us to benefit from this team's decline."