It's a contract year for both Tonyan & Jenkins. If they & their agents have any say in whether they play or not I'm leaning towards both return by mid-season to prove they're healthy & back.
Yeah I expect Jenkins will be back around week 8 or 10, Tonyan around week 4. They should be fine but it will take time to shake off the rust.
Going by past performance, and assuming no lingering problems from their injuries, Jenkins shouldn't have any trouble getting a healthy raise and extension. He might be the most versatile OL in the league and he showed it over several years. Tonyan is going to have to get back to 2020 form though to get a decent contract. Before his injury last year he was just a guy. So who is he? We'll find out if he gets back early enough. Otherwise he may have to sign a one-year-prove-it deal next year. Injuries have consequences, eh? Then again with the cap increases maybe some GM throws a ton of money at him. At this point, I wouldn't chase him. But it's early. The team needs a 2020 Tonyan for sure.