Pereira, 17, is an Ecuadorian U17s striker who recently scored three goals at the U17s South American championship (see video for one of his strikes) and Carvalho, 15, is a Brazilian youngster from Desportivo Brasil.
If you think the name Desportivo Brasil has cropped up before then you would be correct as a long, drawn out flirtation from young striker Bruno Gomes was from Desportivo but despite his best efforts, he wasn’t able to earn himself a move to Man United.
Not much else apart from the information provided is known about the youngsters but they are certainly not the first this season. The likes of Edvard Sandvik Tagseth, Tomasz Kucz, Ryan Johnson, Andrew Lewis have already enjoyed trial periods at the club under Louis van Gaal‘s regime.
In the first-team squad all season, van Gaal has handed opportunities to youngsters and these latest teenagers to join the club on trial certainly won’t be the last.