Minnesota had retained its first-refusal rights on Jefferson by tendering him a contract before the start of the 2013 league year.
The 25-year-old Jefferson notched 37 tackles and defended five passes in 15 regular-season games in 2012 for Minnesota. He started six games at right cornerback and one contest as the club’s third corner. He also started as an extra defensive back in the Vikings’ playoff loss at Green Bay.
The Vikings acquired Jefferson from Arizona after their final preseason game of 2012. The teams swapped draft picks in the deal, per Tom Pelissero of 1500ESPN.com, with the Cardinals getting a sixth-rounder (No. 176) and the Vikings getting a seventh-round choice (No. 213).
Jefferson’s role in 2013 could be tied to whether Antoine Winfield returns to the club. The Vikings released Winfield in March but would like him back.