Reds boss David Flitcroft has challenged John Cofie to realise his “immense potential” after the striker became his fourth summer signing.
The 20-year-old striker, who had a loan spell at Sheffield United last season, has penned a one-year deal at Oakwell, with the option of a second year.
Cofie was released by Manchester United at the end of last season after failing to break into their first team set-up but Flitcroft says, after examining the forward over the past 10 days, he has seen enough to suggest he could be a star for the Reds next season in the Championship.
Flitcroft said: “I’ve seen him when he was at Burnley as a kid. He’s a player of immense potential and immense talent. He’s got great pace and he needs some guides to mentor him and a squad that he believes in to come and do his work.
“Manchester United wouldn’t pay £1 million for a 14-year-old if they don’t fancy him; he has lost his way a little bit, but I am looking forward to working with him.
“Once we’d evaluated him over the weeks training, the decision to sign him was easy.”
Ghanaian forward Cofie joined the Blades on loan at the start of last season and started half of his 16 matches during a six-month loan stint, scoring two goals for the club.
Barnsley have also signed Dale Jennings, ex-Owls centre-forward Chris O’Grady and Lewin Nyatanga this summer.