Koeman appointed as Southampton manager
Feyenoord's then coach, Dutchman Ronald Koeman, gives a press conference after the Eredivisie match between Feyenoord and PEC Zwolle in Rotterdam on December 21, 2013 - by Olaf Kraak
Koeman resigned as Feyenoord boss last month and has agreed a three-year contract with the Premier League club to replace Mauricio Pochettino following the Argentine's move to Tottenham.
The 51-year-old admitted he decided to join Southampton after a positive meeting with Saints executive director Les Reed convinced him his football philosophy can thrive on the south coast.
"I am thrilled to be the manager of Southampton Football Club," Koeman said.
"The opportunity to continue the development of this famous football club was simply too good to turn down.
"From my very first meeting with Les Reed, I could see clearly that this was the right club for me.
"We share the same philosophy of football and the same belief in how to develop the club."
Koeman will be joined at St Mary's by his older brother Erwin, who has been named assistant manager, and Jan Kluitenberg, who will be an assistant and a fitness coach.
During Koeman's three-year spell at Feyenoord he led the team to consecutive top-three finishes in the Dutch league and Reed believes he is the right man to continue the impressive progress Southampton had made under Pochettino.
In the same manner that Pochettino brought the best out of young talents like Adam Lallana, Luke Shaw and Calum Chambers, Koeman also flourished with raw rookies at Feyenoord, where he blooded the likes of Stefan de Vrij, Bruno Martins Indi and Jordy Clasie after the Rotterdam club ran into serious financial difficulties and still managed to qualify for next season's Champions League.
"From the moment we met with Ronald, it was clear he had the vision and ambition to take our club forward, that he shared our football philosophy and could see the opportunity to move our club to the next level," Reed said.
"The club, the players and the fans will all be excited to have a man of Ronald's experience at the very highest level joining our club.
"Ronald's passion for the opportunity here at St Mary's was very clear, and we look forward to continuing our growth with him as part of our team."
Koeman enjoyed a glittering playing career in which he was capped 75 times by the Netherlands and won the European Championships in 1988.
He won two European Cups with PSV Eindhoven and Barcelona and also claimed four Dutch league titles and four La Liga crowns in Spain.
That success has been harder to replicate during his 14-year managerial career.
After leading Ajax to the Dutch league title twice, Koeman guided Benfica and Valencia to domestic cup success before succeeding Louis van Gaal at AZ Alkmaar in 2009, where he was sacked having won only seven times in his first 16 games in charge.
One of Koeman's first tasks will be persuading several of the club's key players to ignore offers from bigger teams.
England striker Rickie Lambert joined Liverpool recently, while defenders Shaw and Dejan Lovren are being chased by Manchester United and Liverpool respectively.
Saints have also turned down two approaches from Liverpool for England midfielder Lallana.
Koeman will discover his first opponents in English football on Wednesday when the 2014-15 Premier League fixtures are released.