According to the Guardian, Tottenham are considering selling Toby Alderweireld to Manchester City this summer, with Pep Guardiola thought to be keen on bolstering his central defensive ranks even further still.
Whilst it seems to be almost a certainty that the Belgian will leave Spurs this summer, Daniel Levy and co must learn from past mistakes, and do everything within their power to prevent the defender from swapping north London for Manchester - just look at Kyle Walker.
The 27-year-old left the Lilywhites for City last summer, in a deal believed to be worth in the region of £50 million, and he has gone on to enjoy a wonderfully successful campaign at the Eithad, winning the Premier League title as well as the Carabao Cup.
Walker has been so important to the manner in which Guardiola's side play that it could be argued Tottenham selling him played a huge part in helping City clinch the league title as soon as they have done.
Spurs have a history of selling their best players. In 2012 they sold Luka Modric to Real Madrid, before sanctioning Gareth Bale's exit to the same club the following summer.
Despite the fact that the Belgium international has played a peripheral role for Spurs this season, he is still one of the best centre-backs in world football, and the north London outfit should surely be doing everything within their power to keep hold of him.
Selling him this summer would once again send out a message of weakness to the rest of the continent, especially if they allow him to leave for one of their direct rivals.
One huge problem for the Lilywhites is the fact that Alderweireld has a release clause of £25 million inserted into his current contract with Tottenham - one that will be activated in the summer of 2019.
With that in mind, if they are offered somewhere in the region of £50 million for his services this summer it would be understandable for them to take the money.
This is about the long game, though, and if Spurs really want to challenge for major honours on all fronts over the coming years, they should do everything within their power to sign the 29-year-old up to a new deal.
In doing so they would be making a huge statement of intent to the rest of Europe, and having someone like Alderweireld amongst their ranks for the foreseeable future would stand them in great stead.