Tottenham Hotspur\'s hopes of signing Belgium defender Jan Vertonghen are fading due to a clause in his Ajax contract. Vertonghen is entitled to 15 per cent of the agreed £9.5million transfer deal under the terms of his deal with the Dutch champions. Ajax have indicated their reluctance to honour the clause and, while the 25-year-old still seeks a move to White Hart Lane, he is resigned to staying in Amsterdam. \"This is a shame. I thought that it would be sorted out much sooner,\" he told Dutch newspaper Algemeen Dagblad. \"As it looks now, I\'ll be at Ajax on July 2. I\'m hoping for a solution, but I\'m not expecting a solution. \"I have one advantage: Ajax have got a good coach who knows me. I play in a good, stable squad. Let\'s become champions with Ajax for the third time in a row.\" Vertonghen is astonished that specific details of his contract have been released. \"I\'m shocked. The percentage is correct - it\'s unbelievable. I know that at Ajax a lot of things are leaking,\" he said. \"When you hear it about other football players, you don\'t feel it. It\'s different when it\'s about yourself.\"