Earlier in the summer, Alderweireld confirmed that there had been no update on talks over a new contract.
The Belgian defender's current deal, which is set to expire in the summer of 2019, contains a clause thats says if Spurs want to trigger a year-long extension, their star man can leave White Hart Lane for £25m in 2020.
Tottenham are desperate to eradicate this clause from any new contract, but Alderweireld's advisor, Stijn Francis, insists improved terms are needed to come to any sort of agreement.
"When you look at Toby's statistics, they are impressive. Either he deserves an appropriate contract, or else he should be given a transfer," said Francis, as quoted by 'The Sun'.
"Seven or eight big European clubs are interested in signing him. There are not many central defenders around who can play like he can.
"But these clubs will have to negotiate with Tottenham's chairman, Daniel Levy."
Alderweireld himself admits his future is in the hand of others. He recently said:
"I leave everything to my father. We will see what happens in the coming months. But of course a great deal has happened recently.
"I am going to progress still further. I can really see myself getting a whole lot better. By adapting my game, I have improved every season."