The Colts need help along their defensive line, and it sounds like Ndamukong Suh might be off the market, with ESPN's Chris Mortensen reporting that Suh is likely to sign with the Dolphins. A much more realistic option for the Colts in free agency along the defensive line is Broncos tackle Terrance Knighton (a.k.a. "Pot Roast"), and according to ESPN's Josina Anderson the Colts have expressed "serious interest" in Knighton.
<blockquote class="twitter-tweet" lang="en"><p>Source: Teams showing 'serious interest' in impending unrestricted free agent DT Terrance 'Pot Roast' Knighton include OAK, WAS, IND & CHI.</p>— Josina Anderson (@JosinaAnderson) <a href="https://twitter.com/JosinaAnderson/status/574632313893449728">March 8, 2015</a></blockquote> <script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>
The 28-year old has spent six seasons in the NFL - the first four with the Jacksonville Jaguars and then the last two with the Denver Broncos. He has played in 93 career games (starting 81) and has recorded 201 tackles, 12.5 sacks, ten passes defensed, two interceptions, and three forced fumbles. He's a good defensive tackle who would definitely fill a void for the Colts.
According to Anderson, however, the Colts will have competition in their pursuit of the tackle, as the Raiders, Redskins, and Bears also have expressed interest. It would be a good move for the Colts to pursue Knighton, though, as he could be a nice addition to their defensive line.