Watch the best saves of Chelsea's world record goalie Kepa (VIDEO)
have signed Kepa Arrizabalaga from Athletic Bilbao for £71m - the highest fee ever paid for a goalkeeper, and a club record transfer .
He has signed a seven-year contract at the club and replaces Thibaut Courtois, who is set to join Real Madrid.
He has spent the past two seasons in Athletic's first team, making 53 La Liga appearances, and has one international cap.
The fee Chelsea
Watch Kepa's best saves below;