The Tottenham Hotspur head coach has been discussing the 21-year-old midfielder.
And the coach saw signs of Dier's potential through the middle well in advance, he says.
The Argentine is quoted as telling reporters: "If we analyse him today he’s one of the best holding midfielders in the Premier League.
"We are very pleased because he has started to play in a position that was his real position, as a holding midfielder.
"We decided to put him and start to play like a holding midfielder because we saw the quality in the position. We analyse the past and we saw his career and he got to the national team playing like a holding midfielder."
The Spurs boss hasn't gone into too much detail but it appears from his comments that he and his coaching staff saw qualities in Dier a while back - qualities few others might have seen.
The 21-year-old's move into holding midfield was certainly an unexpected one as far as most were concerned.
Obviously, though, the Tottenham man has thrived there so far this season and Pochettino seems confident he will continue to do so.
Should Dier largely stay fit for the rest of the season, he should maintain his place in the starting XI without much opposition, although there is always a healthy competition for places in north London at present.