By Grey Whitebloom Despite a strong run of recent results, Erik ten Hag previewed Manchester United’s trip to Luton Town on Sunday afternoon with a note of caution. “I think it’s too quick to say we have turned a corner,” the Dutchman said. “We are not there yet.” A brace from Rasmus Hojlund inside the opening seven minutes suggested that Ten Hag’s apprehension was misplaced but he knows this group of players all too well. Carlton Morris halved the deficit in the 14th minute to unnerve Luton’s lofty visitors. United waned and wobbled but held on to win 2-1, securing a fifth consecutive victory…