Spence was originally drafted out of Miami (FL) by the Steelers in 2012 and most made his biggest impact with the Titans last season.
Those three project to roles on the outside while Spence will be seeing time at inside linebacker.
The 5 foot 11, 231 pound Spence started six of 15 games with the Titans and generated 50 tackles and a career-high 3 sacks.
Per Pro Football Focus (subscription), Spence was their 44th best rated linebacker last season with a +74.0 grade overall-including a +75.5 grade in pass coverage.
Spence's arrival continues the major changes to the Colts linebacking corps that have marked the early part of their offseason.
The defense has struggled replacing departed starter Jerrell Freeman from an offseason ago (who was their best coverage linebacker), having shuffled through the likes of Nate Irving and Sio Moore in the process-both of whom are no longer even with the team.
Jack Doyle #84 of the Indianapolis Colts dives for a first down after a reception against Sean Spence #55 of the Tennessee Titans in the fourth quarter of the game at Nissan Stadium on October 23, 2016 in Nashville, Tennessee.
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