Southampton manager Ronald Koeman has expressed his delight at capturing Chelsea's Ryan Bertrand on a season-long loan.

The Dutchman praised the wing-back's attitude and hailed him as "a top player".

"I'm very happy to be able to bring Ryan in," he told the club's website.

"I spoke to him on Monday afternoon and I was very impressed with his attitude and how keen he was to play games for Southampton.

"He is a top player who will bring a lot of quality to the team. He has experience at the highest level and is an exciting, attacking player, which is what I like to see in my full-backs."

Southampton are believed to have secured a contract clause that enables them to buy Bertrand at the end of the season.