Sullivan played as an undrafted free agent with Philadelphia last season, recording seven solo tackles in five games after spending the first part of the year on the practice squad. He'll join a young cornerback squad in Green Bay that already includes Jaire Alexander, Kevin King and Josh Jackson as the top three options.
Sullivan was waived by the Eagles on Monday, Mike Kaye of NJ.com reports.
Sullivan was waived alongside De'Vante Bausby to make room for Mike Wallace and Josh Hawkins on the 53-man roster. The undrafted rookie logged seven tackles in five games with the Eagles this season, and will search for a depth role elsewhere in the league.
Sullivan's spot on the 53-man roster comes following the placement of Derek Barnett (shoulder) on injured reserve. The 5'11, 194-pound undrafted rookie out of Georgia State will serve in a depth role in Philadelphia's secondary and is likely to receive most of his snaps on special teams.