Smalling joined Roma in a £13million deal back in 2020 after a successful season-long loan spell was turned into a permanent switch by the Giallorossi.
He was a regular for Jose Mourinho’s side last season, making 47 appearances in all competitions, but has been limited to just three outings this term.
The centre-back had been signed by Sir Alex Ferguson from Fulham as a youngster just two years after turning out in non-league and went on to make 323 appearances for the Red Devils.
He left Old Trafford with two Premier League titles, an FA Cup winners’ medal, Europa League and Carabao Cup to his name and has won 31 caps for England, although his last cap came back in 2017.