The Dutch winger has won 22 international caps but was shocked by the "crazy" world of English football when he joined Liverpool from Ajax in the summer.

Babel told Liverpool's official website: "It's understandable I'm not playing 90 minutes. Physically, I'm not yet at the point that I'm able to play 90 minutes in the crazy tempo of the Premier League.

"(Manager) Rafa Benitez said that he signed me because he wanted more players in the squad who can get past opponents.

"Of course my status as a young talent carries certain expectations but Liverpool see me as a rough diamond that needs to be cut and polished."