49ERS SQUAD SHOW: Final Preseason Tune Up, Roster Clarity, Jed York ARREST FALLOUT

The San Francisco 49ers will play their final preseason tune-up tomorrow night against the Las Vegas Raiders, but many lurking injuries and Jed York's recent arrest seem to look like ominous storm clouds over this team. On a positive note, Kyle Shanahan provided positive updates on George Kittle and Nick Bosa, who both are on track to start week one of the regular season against the Los Angeles Rams in Australia. Shanahan also provided insight into who's leading the left guard battle, offering clarity on one of the few starting-roster spots yet to be decided.