Our director of football was in charge of team affairs for our Premiership defeat at Highbury last week.
Gunners have lost just once at home — a weakened team against Ipswich Town in the Worthington Cup — and David refers to Highbury as ‘Fortress Arsenal’.
But he says it could be a different story in Manchester.
David insisted: “I think the most important factor is that Arsenal are playing away from home.
“They have a wonderful home record, Fortress Arsenal. But at Manchester it is a different game, a different atmosphere, we’ll have as many supporters as them and new faces.
“With Glenn also now in charge it could well be that we swing towards a psychological advantage.
“The first 15 minutes are also important, that is when the pattern is set.
“We need a good start and if we can get the first goal, that could provide the platform for what I believe could be a surprise, certainly in the bookmakers eyes.”
David says the attitude at the club is positive. “There is a bounce in the step of those players who have recovered from injuries,” he said.
“They would have seen last week’s game where Arsenal played arguably their strongest side, less Bergkamp maybe. I don’t think they will be particularly tired having won against Valencia. It will be more frenetic, that’s for sure.”
David Pleat believes playing at Old Trafford could be to our advantage in Sunday’s FA Cup semi-final against Arsenal.