49ers’ Brock Purdy intensifying practice work ahead of possible Week 11 return

SANTA CLARA — Coach Kyle Shanahan said Wednesday the 49ers are building toward quarterback Brock Purdy returning to the starting lineup this week.Purdy is scheduled for a limited practice Wednesday, but he appears to be taking a step toward a possible return to action Sunday with a heavier practice load.The 49ers (6-4) play at the Arizona Cardinals (3-6) in Week 11. Purdy could play after missing the past six games with an aggravation of a turf-toe injury.Purdy originally sustained the injury in the 49ers’ Week 1 victory over the Seattle Seahawks. He sat out two games before returning to face the Jacksonville Jaguars on Sept. 28. Purdy re-injured his right big toe in that game. He was limited in practice each of the past three weeks.Backup quarterback Mac Jones started eight of the 49ers’ first 10 games of the season in place of Purdy. The 49ers are 5-3 in the games Jones started.Shanahan said on Monday that the 49ers want to see Purdy make it through a full week of practice before he suits up again as the team’s starting quarterback.“(We) want three aggressive practices and want to make sure he feels good after all of...