Harbaugh brought up the possibility of signing free agent Colin Kaepernick on Thursday. Whether that happens might depend on Flacco's status.
Flacco insists his time on the sideline will be limited.
"That's what we're all hoping for," said Flacco, now in his 10th NFL season. "I want to be out there as soon as possible."
Olson played under Harbaugh's brother,Nike Off White The Ten, Jim, at Stanford. He transferred to Clemson for his senior season and most recently played in the Champions Indoor Football League.
"I feel great. I can honestly say that," he said. "It's so early in camp that it's kind of useless to push through and maybe hurt yourself even more. "
"We had to have another quarterback to get through practice and get through reps,NFL Jerseys Cheap," John Harbaugh said.

Backup Ryan Mallett ran the first team, and the Ravens signed quarterback David Olson on Friday.
OWINGS MILLS, Md. (AP) — Instead of playing football,cheap jerseys from china, Joe Flacco is playing the waiting game while his back heals.
The Baltimore Ravens quarterback missed the first two days of training camp, and there's no telling when he will suit up.
Coach John Harbaugh said it might be a week,Wholesale Jerseys Free Shipping, and Flacco agreed after his teammates walked off the field Friday.
"It has to do with our need,NBA Jerseys China," the coach said. "Joe's day-to-day. Do we really have to make that move or not? That's the decision that really has to be made."