Manchester United boss Sir Alex Ferguson admits it's crucial they score at Champions League opponents Bayern Munich tonight.

Ferguson is wary of Bayern's attacking threat - both at home and away.

"Scoring away from home gives you a big advantage," the Reds boss told reporters at Monday's pre-match press conference. "We must try to do that. When I came here with Aberdeen in '83 we drew 0-0 and everybody was delighted, apart from me. I just sensed the danger. Although we managed to go through, Bayern scored twice on our ground. So scoring [on Tuesday] is going to be important."