An opportunity to face off against his brother Michael for the first time at senior level looks to have been dashed again for Penrith's George Jennings.
The emerging winger is to undergo a scan on Monday on a suspected shoulder injury.
The Panthers will take on western Sydney rivals Parramatta, who acquired the elder Jennings in the off-season, in the second weekend of trial matches at Pepper Stadium next Saturday night.
It would have represented the first chance for 22-year-old George to square off against his more acclaimed brother, but after reporting a shoulder complaint to Panthers medical staff his early season availability is under a cloud.
"He's got a shoulder problem but until we can find out tomorrow what's there we are not really sure [of the seriousness]," Penrith coach Anthony Griffin said on Sunday.
"The doctor this morning was a bit undecided so we'll wait and see how the scan looks. Hopefully for his sake it's not too bad."
Jennings has not played in the top grade since last May when he broke his leg against Manly and with Josh Mansour and Dallin Watene-Zelezniak ahead of him in the pecking order he faces a battle to force his way into Griffin's starting side.
The shoulder injury follows his dumping by then head coach Ivan Cleary for round three last season which postponed a first on-field meeting against his brother who was then with the Sydney Roosters.
Panthers centre Dean Whare sustained a minor calf strain in the club's first trial against the Bulldogs on Saturday but is expected to be clear to back-up this weekend.
The Eels' only concern out of their practice match against Gold Coast Titans in Alice Springs was a head knock suffered by prop Daniel Alvaro, who will have to pass concussion protocols before returning.
Canterbury's prize recruit from Parramatta, Will Hopoate, will be sidelined for at least two weeks with a knee complaint suffered against Penrith but the club remains hopeful he will be fit for its first-round match against Manly on March 4.
The Bulldogs, meanwhile, on Sunday reported a $661,000 profit at the annual general meeting of the football club. That takes into account an annual $4 million grant from Canterbury League Club.
Bulldogs chief executive Raelene Castle said the result reflected the "successful working relationship Canterbury League Club have with the football club".
"Our strategic plans are aligned as we continue to invest in both entities," she said.
"Our membership was up from a numbers perspective, to 18,551, and membership revenue was up year on year. Sponsorship revenue has grown every year for the last five years. All of our revenue lines have continued to go north and we had the largest average crowd of clubs in Sydney last season."
The Canterbury board stood unopposed at the AGM.