Indianapolis Star "Indianapolis Colts left tackle Anthony Castonzo, the anchor of the team's offensive line, finalized a four-year contract extension worth a reported $42 million on Thursday night. Owner Jim Irsay and general manager Ryan Grigson have long considered retaining Castonzo an organizational priority,..." September 11
Stampede Blue "Already today we've seen several notable players (Marcell Dareus and Luke Kuechly) receive long-term contract extensions, and it sounds like we're close to seeing another one: according to NFL Media's Ian Rapoport, the Indianapolis Colts and left tackle Anthony Castonzo are finalizing a..." September 10
#Colts LT Anthony Castonzo confirms he and team in discussions for a potential long-term contract. Entering the last year of rookie deal.
CBS Sports "The Colts exercised the fifth-year option on left tackle Anthony Castonzo, league sources told CBSSports.com on Monday. Castonzo was selected with the 22nd overall pick of the 2011 NFL Draft by the Colts, drafted to protect Peyton Manning's blindside. Thanks to Manning's four neck surgeries, a..." April 28