Wilson, who has scored four goals in 20 senior appearances for United, has been given no indication he has a first-team future under Jose Mourinho.
2018 SeasonAll times ET
Steven Gerrard was denied a win in his first Scottish league game as Rangers manager by an injury-time goal on Sunday.
Jack Cork and Ashley Barnes scored goals in extra time as Burnley beat Aberdeen 3-1 to advance 4-2 on aggregate in the Europa League on Thursday.
Sam Vokes scored a late goal to give Burnley a 1-1 draw at Aberdeen in the Europa League, but the Clarets will be worried by an injury to Nick Pope.
Neale Cooper, one of Aberdeen's European Cup Winners' Cup heroes, has died after being found injured outside his home, the club have confirmed.
Aberdeen clinched second place in the Premiership with a surprise 1-0 win over champions Celtic at Parkhead on the final day of the season.
Celtic moved back nine points clear of Rangers at the top of the Scottish Premiership with a 10th successive win over Aberdeen.
Graeme Murty's new-look Rangers showed Derek McInnes what he was missing as they claimed a 2-0 win over Aberdeen at Ibrox.