United appeared to get those league losses against Bolton and Leeds out of their system with a comfortable 5-2 Champions League victory over Maccabi Haifa on Wednesday night.
Big 'Doc', likely to start on Saturday, believes Sir Alex Ferguson's men will now try to get back on track in the Premiership.
He said: "We'll probably get the backlash from Leeds but they've had a midweek game as well, so hopefully they'll be a little tired from it.
"It's always a tough place to go, whenever you go there. They have top-class players but we'll go there full of confidence, second in the league, everyone's happy, chirpy, so we'll see how it goes.
"It's nice to go there with confidence. I've listened to people on the radio saying we haven't played any big teams but you still have to beat the teams you play.
"We've had difficult games, away games especially and derby games, which are always tough. There are no easy games so we're happy with how it's gone so far."
Gary Doherty says we'll have to be aware of a Manchester United stung by recent Premiership defeats but insists we'll go to Old Trafford full of confidence on Saturday.