The Sydney Roosters veteran was on Sunday handed a grade-two careless high-tackle charge for his shot on Saab in the Sydney Roosters' 34-30 win.
Jennings can take an early guilty plea and miss two weeks or risk a third match on the sideline if he fights the charge and loses.
The charge comes after Sea Eagles coach Anthony Seibold made his frustrations clear Jennings had not been sin-binned, given Saab was ruled out of the match.
"Jason is crook in the changing room, he couldn't pass the HIA protocols and so we lose him for the game," Seibold said.
"The Roosters player gets put on report and it doesn't help us. We don't get any benefit from it just being a penalty.
"I thought that would be a sin-bin but it wasn't tonight for whatever reason."
The impact of Jennings' ban is lessened somewhat by the fact winger Fetalaiga Pauga is due to return from his own high-tackle ban against the Dolphins.
Centre Joey Manu is also set to soon return from a broken hand.
Roosters teammate Sitili Tupouniua and Manly second-rower Corey Waddell also copped charges out of the match, but can escape with fines.
The sanctions came on a busy day for the NRL's match review panel, with a long list of charges coming from Parramatta's upset NRLW win over Brisbane.
Brisbane prop Annetta-Claudia Nu'uausala (l) is facing time on the sidelines. (Jono Searle/AAP PHOTOS)
Broncos prop Annetta-Claudia Nuuausala is facing a combined four matches in bans, for her hip-drop tackle on Reuben Cherrington and then punching Reuben's sister Kennedy in an ensuing fight.
Kennedy Cherrington was also charged for her role in the scuffle, but can accept a $400 fine.
Broncos veteran Lavina Gould is the other player facing a one-match ban out of the match after a hip-drop tackle on Eel Mahalia Murphy that went unpenalised.
11°C