Toni Silva has joined Barnsley from Liverpool after signing a two-year deal with the Yorkshire club.
The Portuguese winger never played for the first team in his three years at Anfield after joining from Benfica, but he did make 15 appearances for Northampton Town on loan towards the end of the 2011/12 season.
The 18-year-old is understood to have turned down offers from other Premier League and European clubs before moving to Oakwell.
He is Keith Hill's fifth signing of the summer, following Kelvin Etuhu, Jacob Mellis, Ben Alnwick and Mido to the Tykes, and the Barnsley boss is excited about his prospects.
"He's left-footed and likes playing on the right," Hill told the club's official website.
"He's quick with and without the ball, he's young and enthusiastic. There's a lot of development we've got to put into this player to make him into a £3million player and I believe we will be able to do that."