The former NSW Residents gun battled a staff infection in his leg and didn't play last week's preliminary final against Grenfell.

The Rhinos still won, though, and booked their spot in the 2019 decider where they'll play two-time defending premiers Trundle.

Osborne says he's trained well this week and "my energy is back" but admits taking on the Boomers at Berryman Oval is a daunting task.

"They'll have a massive crowd there. It's going to be a hard game, it doesn't get any tougher," he said.

"They've been the benchmark all year and we have to beat them at their home ground."

Osborne, though, said all the pressure was on the premiers.

"There's no pressure on us at all. We just have to go up there and play footy," he added.

"I think if we kick like we did against Grenfell and keep turning them around we'll give ourselves a chance."

Boomers coach Josh Miles echoed Osborne's sentiment, admitting the buzz around Trundle and the surrounding towns was near defeaning.

"It's becoming a pretty big deal. Everyone is behind it, which is great," Miles said.

"But as far as the team goes, we don't want to get hyped up too early. It's just another game for us ... although there is a premiership on the line.

"It's not going to be easy."

Miles said with the game on home soil and the club searching to become the first Woodbridge Cup club to win three straight titles since Stockinbingal in 1968-69-70 there was plenty of motivation in his camp.

"It's massive. And to see so much support in such a small town, I think it'll give us a boost," he added.

Gates Open at 9am on Sunday at Trundle, with the youth league decider between Manildra and Trundle kicking off at 10.45am.

Cargo and Grenfell will meet in the lleague tag grand final from 12.20pm before first grade at 2.30pm.