Ralf Rangnick admitted he was “positively surprised” by the speed with which Manchester United adapted to his methods to secure Sunday’s 1-0 victory over Crystal Palace. Having watched Thursday’s 3-2 triumph against Arsenal from the stands, Rangnick was on the Old Trafford touchline for the first time when Patrick Vieira’s men came to town. And Rangnick’s reign began in victorious fashion thanks to an unlikely match-winner, Fred, whose stunning right-footed effort, together with a first home clean sheet of the season, saw the German seal three points on his debut. “I’m more than happy,” Rangnick told Sky Sports . “First of all, most importantly, we won the game. Second, we had a clean sheet, third I think we no doubt deserved to win, because we had control of the game. “The first half hour was amazing. I felt it was extremely high tempo, high intensity, always on the front. The only thing that was missing in this first half hour was scoring one or two, if not three, goals. Ple...