Leeds chairman Professor John McKenzie insists the club “cannot allow” Harry Kewell to see out his contract and walk away from Elland Road for a cut-price fee.
The Australian striker is in the midst of contract talks with Leeds but has been linked with Manchester United and Liverpool in recent weeks.
But McKenzie is desperate to secure Kewell’s signature on a new deal and avoid a situation similar to the one which saw Lee Bowyer stall on a contract only to leave for West Ham for £100,000 (€140,000) in January.
McKenzie told the Yorkshire Post: “I have already spoken to Harry’s agent a few times and we are still very confident of putting a deal together. We hope that Harry will stay.
“I will be looking to meet his agent again next week when I believe we will be in a position to put a new proposal to him.
“We all know what happened to Lee Bowyer and how he was able to walk away for almost nothing and we cannot allow that to happen again.”