Although Aldon Smith suited up for Sunday’s game against the Colts, he will be unavailable for Thursday night’s game against the Rams.

The linebacker was arrested on suspicion of DUI on Friday, and reports emerged that he would be entering rehab after the team’s game against Indianapolis, which 49ers CEO Jed York confirmed after the game. York said Smith will be out indefinitely, and Jason La Canfora of CBS Sports reports that Smith will begin counseling on Monday.

According to CSN Bay Area, Smith’s locker has been cleared out, and there is no timetable for his return.