The Argentine, whose Champions League Final defeat with Spurs was a year ago on Monday, was a shock replacement for the popular Nigel Adkins as Southampton coach in January 2013.
Pochettino spoke little English when he arrived in St. Mary's from Spain, but built a high-octane, technical team around a core of English players.
"Football in England changed with that Southampton team of 2013-14, there is no other team that had as big an impact in changing the mindset,” Pochettino told Guillem Balague’s Talking Football.
"We arrived at a club with a president like Nicola Cortese who gave us what we needed to create something unique in English football. Our ability to adapt to a completely different environment was incredible.
We found a group of players who wanted to learn from the experiences we brought from Spanish football, and with the quality to play a different style of football to that which everyone in English football was used to.
Young players started to appear, and people started to trust in young players, also in the English national team."