'Blue Bloods' Casts 'Entourage' Star Kevin Dillon

Ileane Rudolph
Ethan Miller/Getty Images for Cirque du Solei

LAS VEGAS, NV - JULY 14: Actor Kevin Dillon attends the 10th anniversary celebration of "The Beatles LOVE by Cirque du Soleil" at The Mirage Hotel & Casino on July 14, 2016 in Las Vegas, Nevada.

We’ve been swimming in Reagans since the CBS cop show hit Blue Bloods starting dominating Friday nights seven years ago. On February 17, fans will finally get to meet the brother of nurse Linda (Amy Carlson), the feisty wife of Det. Danny Reagan (Donnie Wahlberg), TV Insider has learned exclusively.

RELATED: Blue Bloods: The Reagan Family Faces New Challenges in Season 7

Kevin Dillon, whose lengthy resume includes Platoon’s memorable Bunny and Entourage’s Johnny “Drama” Chase, has been cast as Jimmy, an endearing ne’er-do-well—the kind that always messes up, usually over a woman. Jimmy usually depends on Danny to bail him out of his various self-made predicaments, but this time he angers the New York mob. And that’s one mess which won’t be easy for even Danny to fix.

Blue Bloods, Fridays, 10/9c, CBS