Manchester United legend Roy Keane has mocked Liverpool's Champions League credentials.

Liverpool fought out a 2-2 draw with Sevilla in their opening match back among Europe's elite and paid dearly for a missed Roberto Firmino penalty.

"It's the easiest part of football: switching on," Keane said on ITV's Champions League highlights show.

"Liverpool do the hard things really well in terms of creating chances, pace, power and a bit of quality going forward.

"But that is the easiest part of football, yet Liverpool cannot seem to do it.

"Win the league and Champions League? No. Forget about it.

"I think they have enough to get through the group but later on against Real Madrid and all the big boys, they'll be laughing at Liverpool."