The 49ers signed Ya-Sin (knee) to a one-year deal Thursday, Field Yates of ESPN reports.
The 2019 second-round pick will suit up for his fourth team in just as many years after agreeing to terms with the 49ers. Ya-Sin missed the final game of Baltimore's 2023 campaign due to a knee injury, but he's seemingly moved past the issue. The 27-year-old cornerback appeared in 14 games for the Ravens last season, recording 13 tackles and two passes defensed.