Robert Jennings will make his NRL debut for the Panthers against the Titans on Saturday.

Big like George and fast like Mike

In a year of rookies taking the NRL by storm Panthers centre Robert Jennings could be the most exciting of the lot given the appraisal of Penrith coach Ivan Cleary ahead of his NRL debut against the Titans on Saturday.

With eldest brother Michael a Kangaroos incumbent and 21-year-old George making his debut in Round 1 this year, Robert completes the family trifecta on the Gold Coast with Cleary declaring him the perfect blend of his two older brothers.

Still just 19 years of age, standing 181 centimetres and weighing in at 101 kilograms, Robert comes in for the injured Jamal Idris and will pair up with 21-year-old Waqa Blake in the Penrith centres, Cleary saying his call-up is one that is richly deserved.

"I've obviously got a lot of time for Rob," Cleary told media on the eve of the Titans clash.

"He's done the whole pre-season and played in all the trials. He's been playing NSW Cup every week and his form's been getting better.

"He plays in that position on the right side and I think he was due for an opportunity. He's earned that.

"I don't know if 'freak' is the right word, he's just a good all-round player. He's got a level head for a young man but he is a young man just finding his feet so certainly not expecting too much of him, any more than doing his job for the team.

"He's a bit of a blend between the other two. George is more power and strength and Michael's got that blinding acceleration where Robert, I'd probably just call him an all-round player.

"He can pretty much do most things; he's got good hands, he defends all right, strong, he can score. He's just a mixture but we'll all see in time.

"We've definitely got a young team and I guess the future has arrived now.

Although he will switch with fullback Josh Hoffman throughout the game again, William Zillman has the task of marking up on Jennings in the opening exchanges and is wary not only of his talent, but of what the occasion may bring out in him.

"He's big and very mobile so he's certainly going to be a handful," Zillman said.

"It's always hard to play against debutants because they usually play out of their skin. They get that chance and they get that sniff so he's going to certainly be a hard one to contain but they have strike all across the field."

Fullback Matt Moylan and winger Dallin Watene-Zelezniak are the only two members of the Panthers backline remaining from the team that dished out the 40-0 hiding to the Titans in Round 2.

George Jennings is back playing NSW Cup but Dean Whare, Jamal Idris, Jamie Soward and Peter Wallace are all on the injured list, paving the way for the likes of Apisai Koroisau and Isaac John to clock up more time in the top grade.

Despite the quality sitting on the sidelines, Titans coach Neil Henry is in no way underestimating the men who have come in to take their place.

"We've looked at some vision of Robert Jennings and he's certainly exciting," Henry said.

"He's probably the biggest of the Jennings boys and very mobile and very similar to his brother in that regard.

"Koroisau has played in the halves at Norths when he was with Souths so he's not unfamiliar in that position and he's a bit of a handful.

"We've got to respect that they're a dangerous side and got good confidence."