The Minnesota Vikings have agreed to terms with half of their pass-rushing duo, extending Brian Robison's contract.Tom Pelissero of the USA Today is reporting the deal keeps Robison with the Vikings for four more years.

ESPN NFL reporter Adam Caplan reports the deal guarantees $13 million over those four years, with a potential payout of $28 million.

Robison was drafted by the Vikings in the fourth round of the 2007 NFL Draft. While he wasn't named a full-time starter until 2011, he has been actively involved with the team's defense since his 2007 debut. In his career, he has amassed 109 tackles, 9 forced fumbles, and 31 sacks; with 16.5 of those coming in his first two full seasons as a starter.