Mac Jones has been the designated starter for the San Francisco 49ers after franchise quarterback Brock Purdy got injured last month. However, Jones has been dealing with a knee injury himself.Earlier this week, reports emerged of an oblique issue with Jones, raising questions over his starting role for the Week 6 clash against the Tampa Bay Buccaneers.San Francisco general manager John Lynch dismissed the concerns over Jones' availability on Wednesday, hinting at the 27-year-old's fourth start of the season in Purdy's absence. Lynch said on KNBR:“No, I think we feel pretty good about where he’s going to be."Brock Purdy has been dealing with a toe injury since Week 1 and aggravated his injury in Week 4 against the Jacksonville Jaguars. Purdy missed practice on Wednesday and is unlikely to feature in the game against the Buccaneers, missing his fourth game of the season.NFL insider dismissed Mac Jones' threat to Brock Purdy's starting roleDespite Brock Purdy's injury struggles this season, the 49ers are off to a solid start, thanks to Max Jones' resurgence. The 49ers are 3-0 in Jones' starts and the quarterback has become an integral part of the offense.He has wasted no time in adapting to Kyle Shanahan's system and has completed 66.7 percent of his passes for a solid 905 yards and six touchdowns in his starts.Jones' performances have started murmurs of a potential long-term starting role even when Purdy returns to the lineup. However, ESPN's Adam Schefter dismissed those rumors."Mac Jones has played well," Schefter said. "The environment has elevated his play as the 49ers thought it would. He signed a two-year contract, and I guess that you look at it as a two-year rehab project, where you kind of find your confidence and playing style and swagger and all those things, and he has held everything unbelievably so far."So his value is going up. I don’t think they’re gonna look to trade him. I think they’re very happy with him. They paid Brock Purdy. I think it’s Brock Purdy’s job, no matter what happens."With Purdy unlikely to return this weekend, Jones will make his fourth start of the season and will look to continue his unbeaten streak against the Buccaneers.