Thomas, a two-time all-league selection, tore his ACL during a workout this spring.
Like Marcus Lattimore, Thomas will not play in his rookie year.
Primarily a left tackle at Clemson, Thomas is likely to play guard for the 49ers. Former first-round draft Mike Iupati, their starting right guard, is in the final season of his rookie contract. Iupati will hit the free-agent market after this season and is expected to command a salary that's higher than the 49ers price range.
By this time next year, Thomas could be in a candidate to start at left guard for the 49ers, a position he played at Clemson.
Thomas to the 49ers
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