Malik Mustapha one step closer to taking over as full-time starter with 49ers

Safety Malik Mustapha made his season debut Sunday while mixing into the action in the 49ers’ loss to the Tampa Bay Buccaneers.Now, Mustapha is another step closer to taking over as the 49ers’ full-time starter.“He got about 20 plays and he looked good and moved around, flew around,” 49ers coach Kyle Shanahan said. “He was ready for that moment, and I liked that we were able to get him in there, do all that stuff and get him out healthy. Hopefully, it’ll be closer to that this week.”Mustapha appears likely to be back in the starting lineup when the 49ers return to action in Week 7 to face the Atlanta Falcons on Sunday night at Levi’s Stadium.But who is going to start alongside him is another question.Veteran Jason Pinnock and rookie Marques Sigle started the 49ers’ first five games of the season. The 49ers made a lineup change on Sunday in Tampa with Ji’Ayir Brown replacing Pinnock in the starting lineup.Brown played the entire game. Sigle and Mustapha split time at the other spot. Pinnock did not see any playing time on defense in the 49ers’ 30-19 loss.“We thought Ji’Ayir Brown had been earning some...