With starting cornerback Rashean Mathis (ACL) gone for the year, the Jags need another cornerback.
Per a league source, the new arrival could be veteran Ashton Youboty.
Youboty, who spent five years with the Bills, was the sixth pick in round three of the 2006 draft.
He has appeared in 43 career games, with eight starts.
The Jags are also eyeballing several other veteran players, at other positions. Tackle Eben Britton, for example, has also been placed on IR.