The Rams will send fourth- and sixth-round picks to Tampa Bay in exchange for Barron, ESPN's Adam Schefter reports. Albert Breer of the NFL Network reports that the two draft picks are both 2015 picks.
The Patriots will receive Casillas and a sixth-round pick in exchange for a New England fifth-round choice, according to Schefter.
Barron was the seventh selection of the 2012 draft out of the University of Alabama. Aside from two games missed last season with a hamstring injury, he has started every game for the Bucs since 2012.
Casillas went undrafted in 2009 and signed with the Saints. He spent three seasons in New Orleans before signing with Tampa Bay in 2012. He has started seven games for the Bucs over the past two seasons.
- Dan Gartland