Lamine Kone has rejected the offer of a new contract at Sunderland as he continues to try to force through a move to Everton.
The Toffees have made a £14million offer for the Ivorian centre-back, who signed for the Black Cats for £5m in January.
Kone had asked for an improvement on his four-year deal but, despite being presented with new terms on Thursday, he has turned down the club's offer.
The 27-year-old now has a back injury and has been ruled out of Sunday's North-East derby at home to Middlesbrough.