The ex Red Devils prodigy proved too hot to handle for the great Sir Alex Ferguson and experienced Premier League boss Sam Allardyce.
Both were left exasperated by the England youth international's lack of discipline and his off the field baggage and washed their hands of him.
Un-Ravel-ling the enigma
And he could be in hot water once again if reports from Italy are to be believed.
According to Football Italia and the website of respected football journalist Gianluca Di Marzio, Morrison stormed out of the club on Thursday and flew back to England without permission.
The reports claim Morrison returned home citing personal problems but it came in the wake of coach Stefano Pioli's decision to leave him out of the squad to face Dnipro in the Europa League.
In fact not only was Morrison not permitted to fly back to England, but all Lazio players not in the squad for the Dnipro game were in 'ritiro' which means they are expected to remain at the training ground, rather than going home, with the aim of fostering team spirit.
How different things might have been
Morrison is still fondly remembered in East London for his wonderful solo goal in a 3-0 win over bitter rivals Tottenham Hotspur at White Hart Lane.
His fall from grace under Allardyce, though, was almost as spectacular as his Maradona-esque run and finish that day.
His struggle for game time in Serie A is the latest chapter in a story of unfulfilled potential.
The outrageously talented player is said to be homesick and desperate for a return to England, as reported by the Mirror.
And this latest episode has led to calls from some West Ham fans for the club to give him another chance under Slaven Bilic, particularly since the injury to star player Dimitri Payet.