Henrikh Mkhitaryan returned from a two-month exile to score one goal and put on a superb individual effort, helping Manchester United beat Zorya Luhansk, 2-0, on a freezing night in Ukraine.The win sent United into the round of 32 of the Europa League. Less fortunate was Premier League rival Southampton, which exited after a 1-1 draw at home to Hapoel Beer Sheva, which went intothe next round as the Group K runner-up.