Hughes believes Sunday is going to be "hell of a day" and rejected the notion he would take any satisfaction from stifling the club he was unceremoniously dismissed from two and a half years ago.
"If we get a result but I will be more pleased for everybody connected with Queens Park Rangers," the former City boss said.
"I wouldn't take any satisfaction from [thwarting City's title quest].
"It would only be delight for my team and my players because it would be a huge achievement to be able to do that.
"It has not been easy. I came in halfway through a very difficult season and it has not been easy.
"Arguably it has been the most difficult job I've had to date, but we've turned things around.
"We've got to where we need to be and the players are understanding what is required at this level and we'll see where it takes us.
"From our point of view, we just want to make sure we're in the Premier League.
"It's the hardest league in world football but it is the best and that is what we want to be part of."