Southampton have completed a £11.5 million move for Dutch defender Virgil van Dijk from Scottish champions Celtic.

Van Dijk joined Celtic in 2013 after three years with FC Groningen who are said to be due a sell-on bonus of around £1m on the deal.

The FC Groningen director Hans Nijland tweeted: “We congratulate Virgil van Dijk wholeheartedly with his transfer to Southampton. A very nice and deserved transfer!”

The international defender has won two successive league titles and the Scottish Cup with Celtic.

Van Dijk said the “unbelievable” opportunity to play in the Premier League was something he could not refuse.

“I’m delighted. It was a very easy decision to join this club,” he told Southampton’s website. “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.

“For me now to get the opportunity to play in the Premier League is unbelievable and I will enjoy it. I know it’s an ambitious club – they have been through a lot throughout the years. They are trying to play football and that’s something that really attracted me.

“I’m so excited. I hope to settle in really quick, get everything around football sorted, start playing and enjoying it because the most important thing in football is to have fun and enjoy every day.”

The Dutchman becomes Ronald Koeman’s eighth summer signing following the arrivals of Juanmi, Cédric Soares, Cuco Martina, Jordy Clasie, Oriol Romeu and Harry Lewis and the loan moves for Maarten Stekelenburg and Steven Caulker.

Here is his first interview to Saints official website-