Cromartie (ankle) is considered questionable for Sunday's game against the Seahawks.
Cromartie's ankle injury kept him out of the 49ers' Week 2 loss to the Panthers, and he was limited in practice throughout the week leading up to this Sunday's matchup. Eric Reid will be the starter at free safety regardless, but Cromartie will look to get back to game action.
Lynch has been suspended for the first four games of the regular season for violating the league's substance abuse policy.
Lynch slid to the fifth round of the 2014 Draft amid character concerns, but developed into of the league's best young outside linebackers by totaling 12.5 sacks over his first two seasons. Nonetheless, Lynch has now incurred his first NFL off-field slip-up, and will miss the first quarter of the regular season as a consequence. With Lynch suspended until San Francisco's Week 5 game against the Cardinals, Eli Harold and Corey Lemonier are candidates to start opposite Ahmad Brooks in the meantime.