AP Source: Colts sign Luck's top protector to 4-year deal (Yahoo Sports)

[ASFN Admin]

Anthony Castonzo has been protecting Indianapolis' most critical investment for three seasons. NFL Media initially reported the two sides were nearing agreement on a $42 million deal. Colts owner Jim Irsay and general manager Ryan Grigson had repeatedly made it clear that re-signing Castonzo was one of their top priorities.

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