Mauricio Pochettino credits himself for spotting Eric Dier's potential as a midfielder and then creating a system in which the player would thrive.
Despite starting his career at Spurs as a centre-back, Dier has found himself playing in front of the back-four in a holding role for Spurs – a position he now also occupies for England.
Amidst talk of interest from Manchester United, the Tottenham Hotspur manager spoke with reporters about the route he and the Spurs coaching staff took with getting the best out of the 23-year old.
"We provided all the tools to be a Premier League player. My first game in charge against West Ham, he started as a centre back, next to (Younes) Kaboul. Kyle Naughton got a red card, he moved to full-back and scored," Pochettino said.
"That season, he played like a full back, like a centre back but never as a midfielder.
"Then in the summer, we were looking for a midfielder and we had plenty of options, but I decided to play Eric in midfield," the Argentine continued.
"I created a system that he felt comfortable in. He played like a midfielder without the ball, but with the ball he was a third centre back.
"You can see in possession he dropped in between the centre backs or between the full back and the centre back, and always we play with three," he added.
"People say now Chelsea changed the system, but no we played always the three in possession. Out of possession, Eric moved in front and without the ball he tried to press and play like a midfielder.
"Then we signed Wanyama and played both, but we had some injuries like Toby (Alderweireld) and Jan (Vertonghen), and Eric was the perfect player to play as a centre back.
"That is a good thing for the player, the possibility to play in different positions and do well in every one," the 45-year old continued.