Kevin Acee of the San Diego Union-Tribune reports that the Chargers are planning to release Castillo.
The move is no surprise: Castillo is owed a $1 million roster bonus in March and a base salary of $3.9 million. With Castillo coming off a season in which he was lost for the year after suffering a broken leg in Week 1, he’s too big a question mark to commit that kind of money to.
It’s still possible that the Chargers and Castillo will work out a new contract that allows him to stay in San Diego, where he has played his entire seven-year career. But first he’ll be able to test free agency.