The Tottenham Hotspur boss has been discussing the Belgian.
Indeed, Pochettino is delighted with the 'maturity' and 'balance' the 26-year-old has brought to White Hart Lane, having joined Tottenham over the summer after a loan spell with Southampton.
And the Belgian's impact in north London has been clear for all to see, allowing his manager to sing his praises before a trip to Everton on Sunday afternoon.
The Argentine is quoted as telling reporters: "It is obvious that Alderweireld, after 19 games, is one of the best defenders in the Premier League.
"It is easy to analyse him now, he adapts and has very good performances with maturity and experience. He is a great man and we are very happy with him.
"It is important to have a good balance and it is true that Toby has made a very good impact on the team."
The key words that stand out are 'easy' and 'obvious.' The Spurs boss is able to discuss the Belgian's success with such confidence and no one can disagree with him.
Alderweireld has helped transform the Tottenham back four and it's difficult to find a better Premier League signing in 2015 when it comes to a player serving a specific purpose so well.
There are other candidates, of course, even from Tottenham themselves. Dele Alli has already proved an inspired piece of recruitment. But there's a strong case for Alderweireld. It seems so 'easy' and straightforward. Why didn't Manchester City, Chelsea, Liverpool or Manchester United even bat an eyelid?