"It's up to him but he could play until he's 40 because his physical condition comes very naturally to him".
"I think it was only Toby (on Thursday) who could not finish the training session", the Argentinian said. In my opinion, he's one of the best centre-backs in the Premier League and in Europe.
The Tottenham boss revealed how he had to motivate the Belgium worldwide defender to show more positive body language when he first arrived at the club. The great Paolo Maldini played at the highest level until the grand old age of 41, for example, and Giorgio Chiellini has been a big part of the Juventus defense that has conceded just one goal in 12 Serie A games, and he is approaching 34. "He was slouched in the tunnel", Pochettino continued.
"When I came, I told him: 'Why are you like that?"
If Alderweireld is ruled out then Davinson Sanchez is expected to start alongside Jan Vertonghen in the middle of defence this weekend and the Colombian has made an impressive start to life in north London since arriving from Ajax in the summer.
Alderweireld has often seemed to make those around him better due to his calming presence, his reading of the game and his poise - and Pochettino feels Vertonghen has had a similar impact on 21-year-old Sanchez.
"The club believe that he needs to be rewarded", he said.
"He has improved in an aspect that was so important for him - the mental aspect", Pochettino said. "Davinson has pace and energy, he is so fast, but he still needs to improve in different aspects and Jan is the flawless partner to help him to achieve all that we believe he can achieve".
"We need to think of [reserve centre-back] Juan Foyth too".
"He is going to surprise many people", he said.