The Colombian's prospective loan move from Monaco has divided opinion - is the striker what Louis van Gaal needs or should he have bolstered up his defensive options?
Bagging one of the highest rated strikers in world football for £10m - even if only for a year - would usually be a cause for applauding said club, but Falcao's arrival has caused widespread mockery from some people.
Many consider Wayne Rooney, 28, and Robin van Persie, 31, to be a top attacking pair that don't need such fierce competition and that it is the centre of defence that Louis van Gaal should be bolstering.
Man Utd's armchair critics have pointed out that Van Gaal seems to have stocked up on left wing-backs while seemingly forgetting about the three top centre-backs he needs for his 3-4-1-2 formation (Chris Smalling, Jonny Evans, Phil Jones and youngster Tyler Blackett have shared the responsibility so far).
Luke Shaw was signed from Southampton for over €30m at the start of the summer, and Marcos Rojo and Daley Blind, who have both played at left-back, have subsequently been brought on board.
However, Blind is often deployed as a defensive midfielder and Rojo is regularly used as a centre-back, suggesting that the comical notion Van Gaal is planning on playing with left-backs might not be quite true.
The Red Devils, though, have failed to sign a tried, tested and reputable centre-back to fill the void left by departed duo Rio Ferdinand and Nemanja Vidic. Falcao's prospective arrival on deadline day has only highlighted this.
However, Van Gaal clearly wants competition for Rooney and Van Persie but was not happy with his other options - Javier Hernandez has been farmed out on loan to Real Madrid and Danny Welbeck has been linked with several Premier League clubs in recent weeks.
So, is Falcao a waste of money when a world-class centre-back like Mats Hummels is what is needed? Or will the former Barcelona and Bayern Munich coach have the last laugh at the end of 2014-15? Vote in our poll and let us know your thoughts in the comment section below!