"We'll get him right and he'll be a great player for a long time in this league," Lynch said.
Niners coach Kyle Shanahan told reporters later Thursday that the team hopes Bosa will be available for the season opener, but he'll be re-evaluated following the preseason. That timeline mirrors what cornerback Jason Verrett, who also suffered an ankle injury Wednesday, is facing.
An ankle sprain is the latest setback for the No. 2 overall pick of the 2019 NFL Draft. Bosa had already missed the team's offseason program with a hamstring injury and sat out most of his final season at Ohio State because of a core muscle injury.
"We don't feel he is injury prone," Lynch said. "Yesterday he had a big human being fall on his leg while he was engaged with someone else."
In other Niners injury news, it appears running back Jerick McKinnon has been sidetracked in his return from a torn ACL last season. Shanahan told reporters that McKinnon has been dealing with a sore knee recently and will undergo a platelet rich plasma injection and miss the next two weeks of action.