The 49ers listed Thomas (ankle) as a limited participant on Wednesday's estimated injury report, Josh Dubow of The Associated Press reports.
Thomas is viewed as day-to-day after suffering the ankle injury in Sunday's 34-31 win over the Lions in the NFC Championship Game. The cornerback still has the next two weeks to upgrade to full participation in practice and clear up some of the concern about his availability for the 49ers' Super Bowl matchup with the Chiefs on Feb. 11.