United booked their place in the draw after squeezing past League One side Rochdale on Wednesday night.
"It is a good game, a tough game but we will try for it and try to win the game," Pereira told MUTV after the draw had been made.
It can be done, we will prepare for the game but for now we need to focus on the Arsenal game."
Pereira added: "I think we have to aim all the way, we have to take every game step by step but we are in it to win it."
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