Eleven supporters were hospitalised after the quarter-final against Roma in the Stadio Olimpico last season, many after a baton charge by riot police inside the ground.
William Gaillard, UEFA communications director and special advisor to president Michel Platini, said: "We will take special care of Manchester United fans because we know they had trouble. We will tighten up security to make sure they don´t get a repeat of the incident."
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