The Argentinian is back at the south coast club for the first time since he quit last summer to take over at Premier League rivals Tottenham.
Mauricio Pochettino insists he is happy Southampton are flying high without him.
Pochettino returns to St Mary’s on Saturday for the first time since he quit last summer to take over at Tottenham.
The Argentinian’s exit sparked an exodus with five key players following him out the door.
But the south coast club have defied the doubters who had them down for relegation by thriving under new boss Ronald Koeman and being in the fight for European football all season.
Southampton are just a point and a place behind Spurs in the Premier League table with five games to play.
Pochettino side-stepped talk about whether, on reflection, he had made the right decision to leave Southampton but said: “The most import thing you need to understand is I’m happy Southampton are at the top, playing very well.
“I love the people in Southampton at the club and the players and always wish them the best.
“In one and a half years (there) it was one of the best periods of my life.”
Asked what reception he expects, Pochettino said: “I don’t expect nothing special. It is up to the Southampton supporters what will happen Saturday.”