After announcing the move, United's social media activity went into overdrive and as the club stated, Lukaku has "carved out a small piece of history by breaking a club social media record".
Now they say he is picking up another £10m after encouraging his client to pick United over Chelsea, with the money going out of football and into his bank account a little hard to accept.
The Red Devils completed a £75m deal for Belgium global Romelu Lukaku earlier this week after the 24-year-old made a decision to move to Old Trafford from Everton ahead of a return to Chelsea. They will be asking questions about Lukaku.
Mourinho has previously cast doubts over Shaw's core-fitness but the player has spent much of his summer break at Carrington ensuring that he recovers as quickly as possible from his present injury.
The Belgian striker has trained with his new team-mates for the first time this week as Jose Mourinho's side begin their pre-season preparations in Los Angeles.
You can nearly guess what the conversation would have been like over at Old Trafford or in Los Angeles, where United are camped for their preseason tour.
5 reasons why Romelu Lukaku will be a hit at Manchester United
"I know that the boy Morata is the people's choice because he's a more glamorous one".
His recovery is said to have "astounded" the club's medical team and he could be back on the pitch as early as 2018.
He is looking forward to playing in front of 75,000 fans each week and creating memories with them.
The Red Devils then face a host of Europe's biggest clubs including; Real Madrid, Barcelona and city rivals Manchester City.
"They've got Lindelof in but I don't think he will change a whole lot".