QPR striker Mackie convinced of pulling off Man Utd shock
Mackie believes the capital outfit are capable of causing another set of title hopefuls plenty of problems this weekend.
"It will be a big occasion for us and the fans," the Scotland international told Sky Sports News HD.
"We are at home and we gave a really good account of ourselves against Manchester City. We hope to do that again against another top, top side. We need to try and get points at home.
"These are the big games. But you don't want to get too carried away about the opponents, we have to make sure we are right and not just give a good account of ourselves, but actually pick up points at home. But we are looking forward to it."