Alderweireld has a year left on his Spurs contract and after developing into one of the Premier League’s best defenders, there is significant interest in the Belgium international.
Spurs can extend Alderweireld’s contract by 12 months but it means he will have a release clause of £25million, which is attainable for most top sides.
As a result, Spurs are demanding around £50m for the defender in a bid to get the best price for him.
Manchester United boss Jose Mourinho wants at least two more signings before the transfer window closes on August 9 and bolstering his centre-back options is one of his key priorities.
According to Sky Sports, United and Spurs are “far apart” in their valuations of Alderweireld and no talks are scheduled between the two clubs.
But the report says a deal for Alderweireld “will go to the final days of the window”.
Earlier this week, Sky Sports journalist Michael Bridge even hinted a deadline day swap deal could happen involving United striker Anthony Martial.
“Anthony Martial’s future could be the big talking point of the transfer window,” Bridge told the Transfer Talk podcast.
“Chelsea have entered the fray and I have said plenty of times that Spurs have a longstanding interest in Martial and I still stand by that.
“There may even be a deadline day swap between him and Toby Alderweireld, who knows. There will still be plenty to go in the last few weeks.”
If Alderweireld eventually leaves Spurs, former captain Ledley King believes Mauricio Pochettino will only replace him with quality.
“Obviously everyone else is adding to their squads and I’m sure the manager is looking,” King told Sky Sports.
“But he will only bring in the right players for the right prices and I think that’s important.
“We need people who are really going to make an impact in the squad. If not, then we don’t need to buy.”