A bried statement on the club's official website reads, "Yuri Berchiche has joined Real Valladolid on a permanent transfer.
"The Spanish defender joined our Academy from Athletic Bilbao in June 2007 and last season spent three months on loan at Cheltenham Town.
"We wish Yuri every success for the future."
Berchiche was snapped up from los Leones in 2007, but failed to make an impact sufficient to earn him entry into the elite at White Hart Lane. He was loaned out to Cheltenham last season, where he made seven appearances.
Athletic were rumoured to be chasing Harry Redknapp's underling, but the Pucela have beaten them to secure his signature.
Adithya Ananth, Goal.com