Manchester United have confirmed the signing of 17-year-old right-back Saidy Janko from FC Zurich.
He joins United in a deal understood to be worth £700,000 after impressing United scouts at the FIFA Blue Stars Tournament earlier this year.
United representatives are reported to have been taken by Janko's performances against United in particular.
Janko, who was born in Switzerland but has a Gambian father and a Swiss/Italian mother, enjoyed a successful trial period at United's AON Training Complex before being offered a deal.
Janko completed his move before the deadline on Monday evening and joins Marouane Fellaini and Guillermo Varela as David Moyes' 3rd and final summer transfer.
He is not expected to be involved with the first-team this year and will ply his trade in the lower age groups.
Late-night capture: Fellaini poses with manager Moyes at Carrington