Paris Saint-Germain completed the signing of defender Yuri Berchiche from Real Sociedad.

The left-back is reported to have cost €15million and has joined the Ligue 1 side on a five-year contract.

Berchiche started 35 of Real Sociedad's 38 LaLiga matches in 2016-2017, providing three goals and four assists, as the club qualified for the UEFA Europa League by finishing sixth in the table.

"I'm extremely happy and I can’t wait to join Paris Saint-Germain," he told the club's website. "It will be an honour to wear the jersey of this club, which has become one of the best and most admired in Europe.

"I'm convinced that I will find here the perfect environment in which to reach my potential, by making progress and winning titles. Everyone knows how ambitious Paris Saint-Germain is in Europe. In conjunction with the staff and players, I will do all I can to help fly the Paris Saint-Germain flag as high as possible."

PSG president Nasser Al-Khelaifi said: "We wish Yuri Berchiche the warmest of welcomes. His excellent performances in Spain convinced is that he is a defender with a character suited to Paris Saint-Germain and its ambitions.

"His competitive nature is the kind that counts for a lot in the eyes of our fans. Through his experience and his drive to succeed at a big European club, [he] will bring a lot of quality and power to our squad."

Berchiche began his career at Athletic Bilbao before an unsuccessful spell at Tottenham, where he didn't make a single appearance. He returned to Spain in 2010 with Real Union and moved to Real Sociedad two years later.