Hall recently ran the 40-yard dash in 4.92 seconds at the Arkansas State Pro Day, weighing in at 292 pounds.
Hall has moved back to defensive line, regaining weight after getting down to 255 pounds when he was with the Ravens to play inside linebacker.
Hall was released before the start of the regular season last year. He tried out for the Philadelphia Eagles last season, but wasn't signed.
Hall has remaining practice squad eligibility.
An all-state linebacker growing up in Paducah, Ky., before becoming an All-Sun Belt Conference selection at Arkansas State -- where he recorded 125 career tackles, 27 1/2 for losses and 17 sacks -- Hall lined up at inside linebacker in a preseason game last summer against the Rams.
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Aaron Wilson covers the Ravens for The Baltimore Sun