The news comes after the 49ers officially announced that second-year defensive end Nick Bosa will miss the remainder of the season due to the torn ACL he also suffered on Sunday.
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Head coach Kyle Shanahan didn't have an update on Bosa or Thomas while speaking with reporters on Monday afternoon because the MRI truck that was scheduled to meet the team at The Greenbrier in West Virginia broke down last night. The 49ers had to send their injured players to a local hospital to undergo the needed tests and were awaiting the results.
Thomas, 25, suffered his injury during the first quarter of Sunday's game, just two plays after Bosa was carted off the field. Both were quickly ruled "out" for the remainder of the game.
The 49ers made Thomas the No. 3 overall pick in 2017. He totaled 21 tackles and two sacks last season in 16 games and three starts last season, his third in the league.
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