The Tottenham Hotspur boss says he will continue playing the 21-year-old in midfield.
Indeed, the Argentine insists he will continue to play the youngster in the middle of the park - and has praised his versatility and form.
And Dier's presence in midfield will help the Tottenham star gain new skills and develop as a player, his manager argues.
Pochettino is quoted as telling reporters during his weekly press conference: "He played well in midfield and was comfortable in that position. He played it before - in Portugal they play like a centre-back or holding midfielder - and I am very happy with his performance.
"His skill is he can play in different positions in the pitch, he started last season as a full-back and scored in the first two games. He can play at centre-back. It’s good for him because he is young and he improves a lot as when you play in different positions you add to your game, gain better tools to be a better player."
But could Dier's move into midfield come at the price of another Spurs youngster or two?
Dele Alli, while very young, is an option that could transform the Tottenham midfield right now - if only simply with his energy. Dier's move into the middle, though, reduces chances for Alli and the rest of his young colleagues.
Nabil Bentaleb will also currently miss out but his poor form dictates that a rest is needed. Dier's place in the side is, of course, justified.
But, while the 21-year-old continues to progress, Pochettino will need to give some of his newer youngsters the chance to do the same. Perhaps a Dier/Alli combo?