John Lynch provides update on ailing 49ers receivers ahead of Cardinals game

On Thursday, San Francisco 49ers head coach Kyle Shanahan revealed that wide receivers Deebo Samuel and Jauan Jennings would be questionable for Sunday's game against the Arizona Cardinals. Neither has practiced this week. Samuel is dealing with rib and knee injuries, while Jennings is working through a shin injury.

Another receiver, Brandon Aiyuk, did not play against the New York Giants last week. He has been limited during practices this week as he recovers from a shoulder injury.

The 49ers have one more practice before Sunday's game at Levi's Stadium, a Friday afternoon session that is typically the lightest of the week. However, it may be crucial in determining the statuses of the ailing receivers.

"I think anytime guys aren't practicing, that leaves some pause," general manager John Lynch said Friday morning on KNBR's "Murph and Mac" show. "The good news is Aiyuk is progressing well. Wednesday, had a blue jersey, which is kind of a non-contact. Yesterday, he [didn't want] it and convinced everybody he was well enough to go out there without the blue jersey.

"So, had a good practice yesterday. I think he's progressing well, so long as he keeps responding. Brandon's tracking in a good way."

What about the two others, Samuel and Jennings?

"Deebo and Jauan have not practiced this week," Lynch said. "So today, in those instances, Friday becomes a big deal. And oftentimes, when we will rule people out if they're not out there, if they can go function on a Friday, at times that will lead us all the way to game time. But excited to see if those guys can get out there today.

"But having B.A. back, if that continues to go that way, is a huge thing, and hopefully those other guys are well. But we've got to kind of see how things progress here today and the next couple of days."

You can listen to the entire conversation with Lynch below.