Linebacker Boss Bailey of Georgia signed Thursday, which means the Lions will begin training camp with all 11 of their selections in the fold.
The Atlanta Journal-Constitution reported Thursday that Smith, who signed a five-year deal, got a $2.2 million signing bonus. The team did not disclose financial terms.
Bailey, whose brother, Champ, is a defensive back with Washington, was the 34th overall pick in the draft in April and No. 2 by Detroit. He emerged as one of the top defenders in the SEC while at Athens.
In 2002, the 6-3, 233-pounder started every game at strongside linebacker, led the team with a career-high 114 tackles, 63 solos, six sacks for minus-55 yards, 10 stops for losses of 66 yards, nine quarterback pressures, a forced fumble, and three blocked field goals.
In his career, he made 266 tackles and had 7.5 sacks, and was a semifinist to the Butkus and Lombardi Awards in his senior campaign.