The former Tottenham manager is full of praise for the Belgian.
However, he also heaped praise on defender Toby Alderweireld - and thinks the 26-year-old is the best centre-back in the world.
MOTM: Team, as always. Hugo, Not a lot to do but spotless when called to action. @AlderweireldTob must be now the best CD in the world?— osvaldo ardiles (@osvaldooardiles) February 29, 2016
Wimmer: better and better. Christian Eriksen, another very impressive performance. However, go for Danny Rose. COYS— osvaldo ardiles (@osvaldooardiles) February 29, 2016
It's a bold claim from Ardiles and probably one that's over the top. If you look at the Champions League's best sides and across Europe to La Liga, Serie A and the Bundesliga, it's difficult to class any Premier League defender as the world's best.
But Alderweireld is definitely one of the form defenders in Europe and certainly the best performing centre-back in the English top flight right now.
Tottenham's core has been so solid this season. Midfield, up front and in goal are all covered at White Hart Lane. But Spurs' back four was far from what it could have been last term. Alderweireld came in and changed that straight away - and he hasn't looked back since.