Jennings was restricted to rehab for the sprained ankle that knocked him out of the last game, but head coach Mike McCarthy sounded somewhat optimistic that the young standout won't have to miss a game.
"He's going to try to give it a run," McCarthy said. "We're shooting for Friday (to get him in practice). We'll see what happens."
Jennings, though, is listed as doubtful on the injury report for Sunday's game against Arizona.
Without Jennings, the Packers have only one proven playmaker at receiver in Donald Driver. Last week, they also lost Koren Robinson to a one-year suspension for violating the league's substance-abuse policy a third time and Robert Ferguson, who was placed on injured reserve Monday because of a badly injured right foot.
First-year Ruvell Martin and undrafted rookie Chris Francies, who didn't have an NFL catch between them, were pressed into service in the 34-24 win at Miami on Sunday. Another undrafted rookie, Shaun Bodiford, was claimed off waivers from Detroit to fill Ferguson's spot on the roster.
"To go from the fifth guy, moving on up the depth chart, and we've got some practice squad guys, too, moving up, that's this business," said Martin. "Some teams go through it, others don't."
Given the uncertainty that Jennings will make a hasty recovery in time for this weekend, all three young reinforcements are being readied for extensive duty. The Packers have protected themselves in the passing game by carrying four tight ends.
"We'll game plan with the people that we have," McCarthy said. "There's a reason why we have four tight ends and two fullbacks. We still feel very comfortable with Ruvell. I thought Chris stepped up in his first game and did well. Shaun looks like he'll be ready, too. So, we've got plenty of weapons."
-- RB Ahman Green had some residual knee soreness from Sunday's game and was kept out of practice Wednesday for precautionary reasons. Green is probable for the upcoming game against Arizona.
-- DT Cullen Jenkins has been ruled out for the second straight game because of a severely sprained ankle. Head coach Mike McCarthy said a return is targeted for next week.
-- LB Abdul Hodge, who has been sidelined since suffering a knee injury in Week 4, also won't play Sunday but could be ready to practice again next week. McCarthy has refrained from disclosing the severity of the injury but said it's not the medial-collateral ligament.
-- LG Daryn Colledge, who suffered a minor calf injury in the last game, practiced Wednesday. The rookie starter is questionable for Sunday.
-- LT Chad Clifton, whom Colledge replaced as an emergency starter in the win over Miami, was on the field Wednesday. Clifton missed the game after he was overcome by flu-like symptoms overnight.
-- DT Corey Williams, who has started in the last three games, didn't practice because of a minor knee injury. He is questionable for the upcoming game.
-- LB Ben Taylor practiced Wednesday for the first time since sustaining a hamstring injury in Week 4. He is questionable for Sunday.