Jones was injured while trying to make a diving catch all alone in the end zone during the 49ers' evening practice. Jones signed a five-year, $16.5 million contract with the 49ers during the offseason after spending four seasons with the Tennessee Titans.
Despite Jones' injury, 49ers coach Mike Singletary is sticking to the company line when it comes to the possible reinforcement that first-round draft pick Michael Crabtree, a wide receiver out of Texas Tech, could provide. Singletary said Friday that he remains focused on the players who are in training camp for the 49ers and isn't busy worrying when Crabtree will finally show up for his first practice.
With one week of training camp already complete, each day Crabtree misses puts him further behind learning a new offense and becoming familiar with his teammates.
"In terms of Crabtree, when he comes in, he comes in," Singletary said. "Would you love to have him in? Absolutely. You'd love to have him. Do we want him here? Yes, we want to have him in. But until that happens, I just can't sit back and think about the what-ifs. All I can do is concentrate on what is and control that."
"This is not a political speech, it's just the truth," Singletary said. "We've got wide receivers that (coach) Jerry Sullivan is working his tail off with them. They're growing, progressing, so we're fine for right now."
With Jones' injury and Crabtree's absence -- the sides apparently are far apart in contract negotiations -- there's an opportunity for Dominique Zeigler and Arnaz Battle to make the team and play a role.
And the 49ers did add a wide receiver, Chris Francies, on Friday and released defensive lineman Babatunde Oshinowo to make roster room. Francies spent time on the New Orleans Saints' practice squad late last season after being released by the Green Bay Packers.
Still, with everything on his plate, Singletary receives a daily reminder that Crabtree isn't in camp. There are constant questions about the wide receiver's status and unresolved contract situation.
Reports surfaced Thursday that Crabtree, the 10th overall pick in April, was prepared to sit out all season, re-enter the draft in 2010 and wait for the money he believes he deserves -- comparable to the deal the Oakland Raiders gave rookie wide receiver Darrius Heyward-Bey. The No. 7 pick signed a five-year contract that will guarantee him at least $23.5 million.
Singletary figures Crabtree is studying the 49ers' playbook on his own to begin learning new offensive coordinator Jimmy Raye's system. But will Crabtree be able to make up ground in a hurry if he reports to the team?
"Well, you just never know," Singletary said. "It all depends on how his learning curve is. If I know him, he's working his tail off, he's studying the playbook. But it doesn't really come together until you come out here and execute it. But hopefully when he comes in, the learning curve is not as great as it may take some others. Hopefully he'll just catch right on and go from there."
Crabtree's future teammates believe the rookie needs to make an appearance soon -- if he wants to make an immediate impact. Tight end Vernon Davis, the 49ers' first-round pick in 2006, planned to reach out to Crabtree either by phone or via text message.
"That's not really my concern as far as him negotiating his contract," Davis said. "I would love for Crabtree to get in so he can have a chance to get better and help the team out. I'm pretty sure we can use his help and his play-making ability. Hey, until he gets here, we definitely have the players and playmakers to get it done."
Notes: LB Parys Haralson returned to team drills for the first time since sustaining a right hip flexor injury in the opening practice Aug. 1. ... LB Patrick Willis (ankle strain) is still out after being hurt on the first day of camp. ... CB Tarell Brown also is out with a toe injury. ... LB Jay Moore returned to the field from a cut finger that sidelined him the past three days.
The Associated Press contributed to this report.