The San Francisco 49ers had a players’ day off on Tuesday, but head coach Kyle Shanahan and his coaching staff were plenty busy. Aside from preparing for their Week 4 matchup with the Los Angeles Chargers, Shanahan & Co. were working out quarterbacks. Following Jimmy Garoppolo’s torn ACL, the team worked out a group of journeyman quarterbacks that include Kellen Clemens, Tom Savage, Landry Jones, Matt Simms, T.J. Yates, and Kyle Allen (per Jordan Schultz), among others. The team gave Matt Moore a call, but he is electing to remain retired.