Manchester United have confirmed the signing of Argentine goalkeeper Sergio Romero.

The 28-year-old joins United on a free transfer after leaving Sampdoria earlier this summer and has signed a three-year contract with the option of a fourth season.

“I am absolutely delighted to join Manchester United," Romero told the club's official website.

"To play for the biggest club in the world is a dream come true for me. Louis van Gaal is a fantastic manager and I cannot wait to get started on this new and exciting challenge in my career.”