The defender is among the players who Dennis Wise expects to see at Thorp Arch next week when pre-season training begins on Monday.
The Angolan international is out of contract and is understood to have been approached by a German Bundesliga club last month, but sources close to Marques suggest he will remain at United next season.
The next seven days may also see the return of Tore Andre Flo, who is working to regain full fitness after fracturing his foot in January.