Middlesbrough youngsters Luke Williams, Bryn Morris and Bradley Fewster are to spend time training with Atletico Madrid.
The move, which is intended to broaden the trio's footballing education, forms part of a relationship being struck up between Boro and Atletico.
Academy manager Dave Parnaby told the Evening Gazette: "We are keen to build relationships with continental clubs to expand our education.
"It's not just about Atletico Madrid playing Middlesbrough, it's designed to encourage player and coach development and foster positive public relations.
"It's a great opportunity for Bradley, Bryn and Luke to sample some different technical and tactical work and their spell over there will undoubtedly benefit them as individuals and players."
