The former Manchester United man told the Daily Star Sunday: "There is no way this can go on for Nando. It's just impossible.
"It's really embarrassing for Nando to play in a team of that quality.
"You would not see Messi or Rooney playing in the Europa League - so there is no reason why Nando should be playing there.
"Along with David Villa, he is the best striker in the world. He needs to be winning things domestically like he does with Spain.
"Liverpool have shown already this season they are not capable of winning things - and that's it for him now."