Liverpool are considering reporting Tottenham for an alleged illegal approach for former player Robbie Keane. Reds boss Rafael Benitez believes Spurs counterpart Harry Redknapp's claims that he would like Keane at his club could constitute an illegal approach.

He said: "We have not decided yet whether we will take this further, it depends on their response."

Liverpool are particularly unhappy because of Spurs' complaints about the Reds' conduct when Keane moved to Anfield for £20million last summer.

Benitez continued: "We have said to Spurs that we are not happy with them because of the comments from their manager about Robbie Keane.

"I do not think that they have come in with an offer. He has been training this week very well, he is our player and he is trying to make sure he is ready for the next match.

"I think he is a long-term part of our plans, I hope he scores a lot of goals."

Benitez added: "We were very, very correct when we signed Robbie even though Spurs were complaining. Now we have this situation to deal with.

"But Robbie has been fine. Spurs wanted the player but they had to do things properly.

"They have to make an official offer and we will say yes or no. You must do things properly, especially when you have complained about everybody when he first joined us."