Southampton have confirmed that Celtic star Virgil Van Dijk has completed his move to St Mary's on a five year deal, with Saints paying the Scottish champions around £11.5m for his signature.
Van Dijk travelled down to Southampton after playing in Celtic's 3-1 win over St Johnstone last Saturday, having also played both legs of their unsuccessful Champions League qualification campaign, and had part of his medical in London before travelling to the South Coast.
His announcement on Deadline Day means that the Saints should be finished for the summer window, and means they have signed their replacement for Toby Alderweireld who joined Tottenham instead of making his loan from Atletico Madrid a permanent one.
Van Dijk was understood to have wanted to have moved to the Premier League to gain a place in the Netherlands international squad, having played three times for the Dutch U21 side, and felt Southampton was the best place to come.
He commented on the move to the club's official website, saintsfc.co.uk, saying "I'm delighted. It was a very easy decision to join this club.
"This is a very ambitious club, who have been doing very well in the last couple of years. It’s a great place to be and it’s the right step for me."
Celtic are understood to have included a sell-on clause in case he moves on from Southampton in the future, and teams up with former Groningen teammate Dušan Tadić and Bhoys teammate Fraser Forster.
Welcome to Southampton, Virgil!