A person familiar with the deal says the Las Vegas Raiders have agreed with free agent linebacker Cory Littleton on a three-year contract. The person spoke on condition of anonymity because the contract can’t be signed until the start of the new league year. NFL Network reported the contract is worth up to $36 million. Littleton is the second big free agent linebacker signed to address a position that has been a revolving door for the Raiders. They also have a deal set with veteran tight end Jason Witten.