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Callum Gribbin

A winger so scrawny those mazy runs look like they might cause him to lose his balance, Gribbin is the latest in a long line of lightweight Manchester United wingers to hug the Carrington training ground touchline.

A goalscorer in the FA Youth Cup this year, Gribbin provided the Under-21s' best moment of the second 45 at City last month with a captivating run that ended with a sliced shot.

The 16-year-old's attitude is a concern, though. In January. Gribbin was also linked with Liverpool earlier this year.

Axel Tuanzebe

Even before he collected the Jimmy Murphy Young Player of the Year award in his club suit, Tuanzebe had caught Louis van Gaal's eye in the club shirt.

The 17-year-old, who grew up in Rochdale, received special treatment from Sir Alex Ferguson as an 11-year-old in 2009 and with a number of homegrown United defenders' futures uncertain, Tuanzebe could capitalise.

Paddy McNair and Tyler Blackett signed new deals earlier this year, but are unconvincing defenders, Jonny Evans' 18-year association with United could end this summer and Under-21 captain Tom Thorpe will leave.

Born in the Democratic Republic of Congo, Tuanzebe led United to their 2014 Milk Cup victory and, even at a young age, possesses impressive physicality.

Timothy Fosu-Mensah

Van Gaal's Dutchification at United goes beyond the first-team's playing and coaching staff. Amsterdam-born Fosu-Mensah, 17, joined from Ajax last year and has proved to be a graceful presence in the United academy's defence.

Impressive in the AEGON Future Cup tournament last year, like Tuanzebe, Fosu-Mensah might have to emerge from his comfort zone next season.

He made the bench for the Under-21s' win over West Ham in April and his technique will endear him to Van Gaal.

RoShaun Williams

Signed to United since he was nine, Whalley Range resident Williams smashed Olympic gold medallist Darren Campbell's 25-year-old 100m record last year and Williams is putting that pace to good use in United's academy.

(Image: Vincent Cole)

Williams is 16 yet staff at Carrington suggested he should have been a fixture in the U21s last season. Centre-back Williams was involved in United Under-19s' Mercedes-Benz Junior Cup victory in January - where he was The Reds' youngest player - and then captained the U-18s.

Angel Gomes

Portuguese-born but with a father who used to play for Salford City, Gomes was named best player in the Internationales U15 Turnier last year and scored this outrageous solo goal.

A player Nani has trumpeted and who was pictured with Cristiano Ronaldo when he was so small his head was resting against the United great’s hip, Gomes boasts enviable technique and ability.

See pictures from United U21s' win over City in May below