Tottenham are concerned about losing Toby Alderweireld on a free transfer.

The Belgian central defender only has a year left on his contract and no one has bid for him this summer.

The 30-year-old wanted big wages from any suitors, while his age and the asking price from Tottenham put clubs off the pursuit.

Spurs are worried he will leave on a free unless they can tie him down in the coming months, per the Mirror.

Alderweireld can talk to clubs abroad from January.

It is possible that Spurs will sell him before the European window closes on August 31, but there has been no report of a bid from any club.