The midfielder had his Anfield unveiling postponed after checks indicated some damage to both knees from an earlier stage of his career.
Talks between the clubs went on during the day with Crewe pointing out that Murphy has been a regular in their side for the past three or four years and has never encountered any problems.
The pounds 1.5m down payment plus another pounds 3m in instalments may have to be altered to take the discovery into consideration and there is also the question of whether Murphy's knees can be insured. However the signs from both clubs are that the deal will still go ahead.
Paul Ince also made a visit to Liverpool to assure the club he wants to join them, despite reports to the contrary. The England midfield player will speak to Internazionale today to inform them he wants to leave, with the pounds 4.25m fee already agreed.
"Liverpool have been a short head away from pipping Manchester United and I feel that if I go there I have a chance of winning the championship even though I have already won it with Manchester United," Ince said.
"It's a challenge for Liverpool, it's a challenge for me. I won every domestic trophy that I could win at Manchester United. I had six good years there but I need a new challenge.
"The papers have said that I've already signed for Liverpool, which is not true. As far as I am concerned I am still under contract at Inter and still will be until I sign for another club.
"It's a hard decision. If I come back to England it will be for the family. I've got a wife and two kids and maybe it's the time to come back to England."
Ince believes that his spell in Italy has been worthwhile and said: "As far as I am concerned I've had two good years at Inter Milan.
"Thomas, my boy, is five. He has to go to school and we feel now is the time is for him to go back to school in England."Reuse content