Recent footage of NaVorro Bowman's rehabilitation from a torn ACL shows the 49ers' inside linebacker hard at work in the early stages of his recovery. Is it possible he can return in time for the first game of the season?

"I wouldn't count NaVorro Bowman out of anything," Jim Harbaugh said today. "He's a supreme athlete, a world-class athlete among world-class athletes. The way he moves, his strength, his powers of healing. I wouldn't count him out of anything."

Still, Harbaugh said the most realistic scenario for Bowman's recovery may be to put him on the physically-unable-to-perform list, as was the case with Michael Crabtree last year, and bring him back at some point during the season.

"Realistically, halfway through the season (or) something like that would be more realistic," he said. "But I never underestimate NaVorro Bowman."

If the 49ers are eying a midseason return, they promise to have a good training-camp competition among Michael Wilhoite, 2013 draft pick Nick Moody and whoever else they bring in this offseason at inside linebacker. Wilhoite filled in well for another inside linebacker, Patrick Willis, when he was injured early in 2013.