Olympique Marseille boss Eric Gerets admits he was taken aback by the energy of Champions League opponents Liverpool in their win over Manchester United on Saturday.

He said: "I enjoyed Liverpool's game with Manchester United. I love watching football at that pace.

"Liverpool are like the Duracell bunnies - they are an example to the rest of the world for the effort they put in.

"You just wind them up and off they go."