Scott McTominay says he will be back “sooner than you think” after Manchester United confirmed he has undergone surgery on a groin issue.United have revealed McTominay will miss Sundays trip to Wolves having undergone surgery after playing with pain in recent months. The 24-year-old was left out of Scotlands national team squad for next months World Cup qualifiers this week and his club provided an update on his fitness on Thursday.A statement on the clubs official website read: Scott has undergone surgery for an ongoing groin injury that was causing significant pain when playing.Having tried all other treatment options in pre-season, surgery was deemed necessary to resolve the issue. We hope to have him back soon.McTominay started Uniteds opening match of the season, the 5-1 win over Leeds. But he was restricted to a cameo role in their 1-1 draw at Southampton last weekend.The midfielder expressed his frustration at missing the upcoming Premier League clash at Molineux. He will also be absent for Scotlands fixtures with Denmark, Moldova and Austria. But he promised to be back soon.He said on Instagram: Just to let you all know Ive had minor surgery on an issue which has needed managing for the last couple of months.I hate missing games so to be missing Wolves on the weekend and the international break is so disappointing but thats part and parcel of the game. Wishing all the boys the best of luck and I will be back sooner than you think.McTominay’s absence may be another reminder to United that they need depth in the middle of the park.A recent report claimed they have a three-man shortlist to strengthen their midfield before the transfer window closes. But they are now supposedly exploring a deal for a fourth name.One reporter has revealed they have made an enquiry about a player with Premier League experience…READ MORE: Man Utd make late play in transfer battle for ambitious star after rival enquiries from Liverpool, Arsenal