Manchester United are one of the biggest and most prestigious clubs in the world and despite their recent struggles on the pitch, they have one of the biggest fanbases in the world and a number of top players plying their trade at Old Trafford.
Despite their reputation, the Red Devils have been thwarted by some top players when it comes to signing them and here we take a look at four failed transfers on their part.
1. Ronaldinho (2003)
Ronaldinho had emerged as one of most talented players in the world during his time at Paris Saint-Germain and in 2003 was understood to be very close to moving to Old Trafford.
United legend, Paul Scholes even confirmed that the Brazilian was almost announced and was in the process of being given a shirt number - only for the player to change his mind and sign for Barcelona at the last minute.
2. Toni Kroos (2014)
Toni Kroos was heavily courted by United when it emerged that he had decided to leave Bayern Munich in 2014, with the player confirming that then manager, David Moyes had visited him and that the contract between the two parties was basically done.
However, the deal fell through as Moyes was sacked soon after and replaced by Louis van Gaal, with the midfielder opting to join Real Madrid instead.
3. Sergio Ramos (2015)
Sergio Ramos was another top player who was understood to be on the club's radar with the defender even expressing an interest in joining the Red Devils in 2015.
The Spaniard had even spoken to the United management and sorted out a contract but then was offered a new deal by Real Madrid and decided to stay with them.
Many believe that this was just a ploy by Ramos to increase the value of his deal and put pressure on the Los Blancos to offer him a new and improved contract.
4. Thomas Muller (2015)
Louis van Gaal who was in 2015 the manager of the club was extremely keen to reunite with Thomas Muller, having managed the German during his tenure with Bayern Munich.
The playmaker/striker revealed that he had considered moving to Old Trafford but decided against the move after the Bavarians reiterated that they wanted him to stay with them.