Castillo played in just one game during the 2011 season after suffering a broke tibia. Castillo is a seven-year NFL veteran who had spent his entire career with the Chargers who drafted him in the first round in 2005.
Castillo left his visit with the Chiefs without signing a contract and visited the Patriots over the weekend. He will reportedly continue to visit other teams before deciding on his next club. The Chargers are among teams that are are interested in signing Castillo.
At 6-foot-3, 290-pounds, Castillo has the size and the speed to be effective in either the 4-3 or the 3-4. He is a good all-around defensive lineman that is also strong against the run as well as rushing the passer.