Manchester United is a club that is headed for a crisis right now, with key players like De Gea and Anthony Martial out of contract next summer.
Though the possibility of these players leaving on a Bosman transfer next June seems unlikely, but with contract negotiations currently on hold, fans are holding their breaths as the transfer window inches closer.
If we take a look at the transfer history of the Red Devils we'll find that over the years some very interesting names have left the Old Trafford for next to nothing.
So, with Manchester United not far away from losing as many as 10 players for free next summer, let us take a look at the five stars who were let go by the club on a free transfer.
#1 Paul Pogba
Manchester United's management must've been kicking themselves when they realized that the player they let on free in 2012 blossomed into one of the best midfielders in the world. Paul Pogba who spent two years in the Manchester United academy only made his Premier League debut in 2012.
He would go on to make only three substitute appearances in the Reds jersey in the Premier League, before making a move to Turin to join Juventus.
The Frenchman won four consecutive Serie A titles with The Old Lady, also claiming the Golden Boy award in 2013. His midfield exploits made him one of the hottest prospects in Europe back then.
His stock only kept rising higher and higher in Italy where he impressed everyone with his long-range shots and exquisite skills. In 2016, it was his old club that would break the world record for transfer fee by bringing him back to Old Trafford for €105 million.
To this day, losing Pogba for a measly fee of £800,000 is considered as one of the biggest mistakes of the legendary Sir Alex Ferguson.
Without a doubt, his move to Juventus can be described as one of the biggest free transfers of all time.