#2 Romelu Lukaku
Manchester United got one better over the masters of transfer hijacks. Chelsea have been known for a number of transfer hijacks in the recent past, but were at the receiving end of the Lukaku deal when Mourinho snatched him from under the noses of Roman Abramovich and co.
Mourinho was looking for a striker in the transfer window ahead of the 2017/18 season, and Alvaro Morata was thought to be the no.1 target. Real Madrid played hardball with Manchester United because of the de Gea saga and rejected three of United's offers.
With 51 goals for Everton in his last two Premier League seasons, Romelu Lukaku was one of the hottest properties in Europe during the 17/18 transfer window, and Chelsea were the front-runners for his signature because of his past with the Premier League champions.
All of a sudden, out of nowhere, Manchester United announced that they had agreed a £75 million deal with Everton for the 24-year-old. Eventually, the Belgian international moved to Old Trafford days later, stunning the world with an outrageous plot-twist