Mauricio Pochettino has been appointed as the new manager of Tottenham Hotspur this evening, after resigning from Saints.
The 42-year-old has signed a five-year-deal with the north London club, replacing Tim Sherwood, who was sacked two weeks ago.
He is joined at Tottenham by his assistant manager Jesus Perez, first team coach Miguel D'Agostino and goalkeeping coach Toni Jimenez.
Speaking of his appointment on Spurs' website, Pochettino said: "This is a club with tremendous history and prestige and I am honoured to have been given this opportunity to be its head coach.
"There is an abundance of top-class talent at the club and I am looking forward to starting work with the squad.
"Tottenham Hotspur has a huge following across the world and I have great admiration for the passion the fans show for this team.
"We are determined to give the supporters the kind of attacking football and success that we are all looking to achieve."
Saints confirmed this evening that they had accepted Pochettino's resignation ahead of his move to Spurs.
A condition of his exit is that he must settle the remainder of his contract with the club. That sum will be about £2m, which was the Argentine’s annual salary at the club.
Saints chairman Ralph Krueger has said that the search for a "new high-calibre manager" has already begun.
Former Espanyol coach Pochettino joined Saints in January 2013, when he replaced Nigel Adkins, who was controversially sacked by the club.
He helped keep them in the Premier League last season, before guiding them to a record Premier League campaign this term, with the side finishing eighth and amassing 56 points.
Tottenham chairman Daniel Levy said: "In Mauricio I believe we have a head coach who, with his high energy, attacking football, will embrace the style of play we associate with our club.
"He has a proven ability to develop each player as an individual, whilst building great team spirit and a winning mentality.
"We have a talented squad that Mauricio is excited to be coaching next season."
Saints defender Luke Shaw responded to his manager's departure on Twitter.
"Would like to thank Mauricio For everything he has done for me," he said. "Great manager, great guy and has helped me a lot. Wish him all the best."