India, Sept. 24 -- Manchester United just pulled off the cheekiest heist in English youth football.

They did not just sign a 17-year-old prospect. They raided Manchester City's academy and walked away with one of their most gifted young midfielders.

Karim Cassim is officially a Red Devil, and the paperwork from the Premier League has finally landed at Carrington.

Here is everything you actually need to know about the teenager who just swapped the Etihad for Old Trafford.

Who Is Karim Cassim? The Engine Room Profile

Cassim is a 17-year-old midfield workhorse born on September 12, 2009.

He is not a flashy YouTube compilation player. He is the guy who does the dirty work and makes everyone around him tick.

Tactically, he is a hybrid. ...