Timothy Fosu-Mensah is heading back to London, about 10 miles south east of where he was plying his trade last season.
Fulham, meanwhile, have enjoyed a fruitful transfer window, signing seven players to bolster their ranks ahead of their Premier League return.
The Netherlands global spent last season on loan at Crystal Palace, where he made 21 appearances in all competitions.
He has two years remaining on his contract with the Old Trafford club.
Mourinho frustrated as Premier League clubs race to beat new deadline
They've never won six in a row against promoted clubs previously in the competition. He added: "I don't think there's a lot of changes (to the squad from last season)".
BWS: Subtropical Storm 'Not Threat To Bermuda'
So far this season we have had Subtropical Storm Alberto, which formed in May, as well as Hurricane Beryl and Hurricane Chris. The National Oceanic and Atmospheric Administration will release its updated mid-season hurricane forecast on Thursday.
Google Pixel 3 XL just leaked in an unboxing video
The leaked images also reveal that the Pixel 3 XL will have an iPhone X-like notch, and it's much bigger than you might expect. Starting with the phone itself, the images once again show a device with a sizeable chin and a thick display notch.
Former England global Paul Merson believes the Premier League encounter between Fulham and Crystal Palace will be dependant on Wilfried Zaha's performance. It has a nice history, it's a nice club.
"A good loan is a loan to play", Mourinho told MUTV on Thursday morning.
"That discussion I know has been going on and I get occasional updates, as far as I am concerned that is private business between Wilf [Zaha] and the club, but I am confident that they'll find the solution that everyone is happy with".
"I am equally pleased that (assistant manager) Ray Lewington has also extended for the same period, putting us in great shape for this season and beyond".