Sport says United have been chasing him all the way through the transfer window before Chelsea looked on course to hijack a possible deal by reportedly agreeing a deal.
But for most of the summer, De Jong has wanted to stay at Barca.
Now the midfielder has admitted to team-mates in the locker room he could be on his way to Old Trafford.
De Jong was desperate to play Champions League football this season but could be willing to forgo that demand.
The ex-Ajax star is still owed millions in unpaid wages which he wants settled before his future is resolved.
But the report adds he is now growing increasingly furious with the way the club are treating him and putting pressure on him to leave.