After missing last week's game against the Eagles, rookie linebacker Reuben Foster will return to the lineup on Sunday.
Foster is active and is expected to start against the Cardinals at Levi's Stadium.
The first-round pick has started just two games this season and left both with injuries. In Week 1 against the Panthers, he left early in the opener after suffering a high ankle sprain. Once he finally returned in Week 7 against the Cowboys, he was forced to leave after injuring his ribs. He missed the game in Philadelphia with back spasms.
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The seven players listed as inactive for the 49ers' game against the Cardinals are: CB K’Waun Williams, LB Aaron Lynch, T Joe Staley, T Garry Gilliam, DT DJ Jones, DL Solomon Thomas, DE Pita Taumoepenu.
Here are the Cardinals' inactive players: