#5. Alexis Sanchez
Finally, the latest addition to the infamous list is none other than the Chilean sensation, Alexis Sanchez. A move that was thought to be a masterstroke soon turned into a mere disappointment. The former Barcelona player spent 4 years at Arsenal where he often turned out impressive performances for the Gunners, a big reason United brought him in.
Manchester United beat their derby rivals, Manchester City to the signature of Alexis Sanchez as the citizens were tipped as the favourites to land the Chilean. United fans believed Sanchez to be their new star man but ever since he completed his switch from Arsenal, Sanchez has looked like a mere shadow of his former self.
Time might be running out for the former Barcelona man as United fans have grown frustrated with the series of disappointing performances and with continuously wasted chances knowing the fact that talented youngsters like Martial and Rashford are being looked over in order to incorporate Sanchez in the starting 11.