George Kittle, who played at Norman High School, agreed to a four-year contract extension with the San Francisco 49ers that will make him the highest-paid tight end in NFL history.

George Kittle, the most prolific tight end in 49ers’ history, has secured a four-year extension ahead of his ninth season.

The San Francisco 49ers are locking in one of their key veterans for the future. Tight end George Kittle has signed a ...