Athletic Bilbao youngster Jon Aurtenetxe will spend the 2013/14 season on loan at Celta Vigo.
The 21-year-old defender was a first team regular last term for Los Leones, but new Coach Ernesto Valverde believes his development would be best served at Balaidos.
The Spain U21 international has been signed by Luis Enrique to fill the gap left by Roberto Lago, who joined Getafe over the summer.
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