"Everyone is excited and it is wonderful to see what a week's break can do to a group of players," Muller told the Belfast Telegraph.
"The training has been outstanding this week, everyone is upbeat and looking forward to a great game of rugby.
"This is the start of a really important six weeks for us, we need to build some momentum and we need to keep that Magners dream alive. We want to get into the top four and if we can get a positive result against the Dragons we'll be right up there.
"Every game is almost like a semi-final or final for us now. If we want to get into the Magners League play-offs we're going to have to win every week now, so if we take our eye off the ball tonight we're going to regret it a couple of weeks down the line.
"It's important we play some good rugby to get the confidence up for the next six weeks lying ahead."