Patrick Dorgu has been sent back to England by Denmark due to a lack of fitness having linked up for international duty.The versatile full-back, who can also operate as a winger, only just returned to action for Manchester United following his recovery from a hamstring injury.Dorgu is not fit enough to play for Denmark during the international break, despite joining the squad two days agoGettyDorgu injured himself during Denmark’s 2-0 Nations League win over Wales in September, and was substituted with 30 minutes played.Despite not initially being picked by Brian Riemer for this international break, the 22-year-old joined his nation’s squad on Wednesday.This was three days after he came off the bench for United to score their late equaliser in the 4-4 Premier League draw with Aston Villa.However, although he trained with the rest of the Denmark players, Dorgu will not play in their matches against Portugal and Norway.Denmark statement on DorguA statement from Denmark’s doctor Morten Boesen read: “We have carried out a series of tests on Dorgu, and he has not performed well enough to be ready to play in the two matches.“He needs further recovery time after his injury.“So we are sending him home for additional rehabilitation.”Head coach Riemer had held a positive outlook on his ability to play a role in the international break before the news of his fitness.“There are still some lingering issues with the major muscle injury he suffered,” he said, via United’s website.“We need to make sure it doesn’t flare up again. We’re optimistic, and we also believe things will go well.”Dorgu picked up a hamstring knock during the October international breakAFPBut Riemer also stressed that if Dorgu was fit to play, he would likely only be used as a substitute against Norway on Tuesday.The Dane’s lack of fitness will come as a blow to United and their new head coach Mauricio Pochettino.Pochettino has signed a two-and-a-half year deal and will join from his United States men’s national team role next week.With United 18th and in the Premier League relegation zone, he faces a difficult battle to guide them towards European qualification.Left-back has become a position of concern for them this season as Luke Shaw is sidelined with a muscle issue.Diogo Dalot, a natural right-back, has been the go-to replacement for him in the role, but has struggled.Pochettino already faces a fitness concern at left-back as the new United head coach with Dorgu’s withdrawalGettyDorgu has played at left-back for United, as well as left-wing back and on the wing.Pochettino will hope he can return to full fitness in time for his first match as head coach against Liverpool on November 22.