Dalot joined United from Porto under Jose Mourinho and while he was not a first-choice pick for the Portuguese, his opportunities became far more limited under Ole Gunnar Solskjaer in his first full season as manager.
The 23-year-old fullback played 23 times for the first team in his debut season at Old Trafford but played just 11 times in 2019/20.
He was linked for a move away since the start of last season and left for Italian club AC Milan in the most recent transfer window, making a move on a season-long loan, but there is no obligation for his new club to complete a permanent deal at the end of the spell.
The Sun reports claims that Stefano Poli, AC Milan’s boss for now, is already impressed with the youngster and would like to convert that loan spell to a permanent transfer as soon as January.
United are currently in need of funds as they suffer from the fallout of the coronavirus pandemic, with Manchester itself set for the strongest current lockdown restrictions in Britain.
They spent a relatively small sum over the course of the summer, with £40 million spent on Donny Van der Beek, £15 million on Alex Telles, £10 million on Facundo Pellistri and around £25 million to arrange the future switch of Amad Diallo from Atalanta. Edinson Cavani also arrived on a free transfer.
Chris Smalling was let go to Roma to fund the Telles deal, Alexis Sanchez joined Inter Milan on a permanent deal after an initial loan spell, and Andreas Pereira moved on loan to Lazio.
Jesse Lingard has also been linked with a late move away to a European side where transfers are still permitted, and Sergio Romero is reportedly keen on a move to MLS.