Everton's move for FC Twente midfielder Leroy Fer hangs in the balance after a problem with the player's medical.
On Monday the Toffees announced they had agreed an £8.6million fee with the Dutch club and the 23-year-old travelled to Merseyside to discuss personal terms and undergo the usual routine health checks.
However, Press Association Sport understands during those assessments medical staff identified an issue which raised enough concerns for Everton to go back to Twente in an attempt to renegotiate the deal.
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