United have already won the Club World Cup and the Carling Cup. They are also well placed to win The Premier League, Champions League and FA Cup.
Park claims they are driven by their FA Cup loss to Portsmouth last season, that ended their Treble dreams.
“We feel like we can win all five,” said Park in the Daily Star. “We know that everybody is talking about that.
“What we are doing is the only thing we can do – which is to concentrate on each and every single game one at a time.
“Then at the end of the season we can really go for the trophies.
“We know how easy it is to make mistakes and go out of competitions, like we did in the FA Cup against Portsmouth last season.
“This time we won’t make those mistakes again. We have a stronger squad now.
“Everybody is fresh to play and it won’t happen again.”
