4. CB Sean Murphy-Bunting
Murphy-Bunting was a free agent a year ago, and in a broad sense it's possible he was on the Lions' radar as Brad Holmes undertook the effort to remodel the secondary. He landed a one-year "prove it" deal with the Titans of course, starting 14 games with two interceptions, eight pass breakups and 57 total tackles and a 91.8 passer rating allowed as he battled multiple injuries.
According to Pro Football Focus, Murphy-Bunting posted solid coverage grades this season with no pressure (68.2) and when the opposing quarterback had less than three seconds to throw (63.2), with a forced incompletion rate of 8.8 percent. On the flip side, his grade in single coverage was a dismal 33.7.
It's a deep class of free agent cornerbacks this year, pending franchise tags and such, and Murphy-Bunting is widely ranked as a top-10 option.
The former Super Bowl champion with the Tampa Bay Buccaneers would not be the big swing at cornerback Lions' fans want, and arguably should be made to add a veteran. But as a piece of the equation who won't be expensive, there's a potential fit.