Alderweireld currently takes home around £50,000 a week, but is supposedly demanding more than triple that to have parity with the club’s biggest earners.
After just returning from a three-month injury, the Belgian defender has had problems trying to regain his place in the starting XI.
He was even left out of the Champions League last-16 first leg away to Juventus.
Reports last week suggested Real Madrid were lining up a move for the 28-year-old, as Zinedine Zidane seeks to revamp his squad.
Manchester United are also said to be monitoring Alderweireld’s situation, with Jose Mourinho have growing doubts over Phil Jones and Chris Smalling.
And now according to The Times, Spurs are ready to sell Alderweireld for £25million which is the clause in his contract.
Pochettino has supposedly backed the decision and feels having a strict wage structure is necessary if he can improve other areas of his squad.
The north London outfit are also believed to be negotiating new deals for Christian Eriksen and Son Heung-min.
Meanwhile, Spurs return to Premier League action on Sunday (midday) against Crystal Palace.