Irsay announces a signing, but the player’s name isn’t Luck

Good news, Colts fans.  You have a new player under contract. Bad news, Colts fans.  His name isn’t Andrew Luck. Owner Jim Irsay has announced on Twitter that the Colts added defensive tackle Jason Shirley to the 90-man roster. A fifth-round pick of the Bengals in 2008, Shirley has appeared in only seven career games:…