United have confirmed the acquisition of two more first-year scholars.
Goalkeeper Joel Castro Pereira has signed for the club after a successful trial. The Switzerland-born shot-stopper, 16, will add to the options between the sticks for coach Paul McGuinness.
Sean Goss, who turns 17 in October, is the other new face after appearing for the Reds during last season's Aegon Future Cup, helping the team to reach the final in Amsterdam.
The Germany-born midfielder has sealed a switch from Exeter City and recently revealed he has always been a United supporter.