In the case of Vitek and Amass, United are prepared to sell both players or consider another loan with an option to buy. Until then, both players will remain part of the first-team squad and train at Carrington. He is valued at around £6million after spending last season on loan at Sheffield Wednesday and Norwich. Here Daily Mail Sport takes a look at the exciting youngsters knocking on the first-team door. PS: Not all the young players knocking on the first-team door at United this season will have come through the club’s academy.