The San Francisco 49ers and Fred Warner agreed to a three-year, $63 million contract extension, which will make Warner the highest-paid linebacker in NFL history, his agency announced.

Linebacker Fred Warner agreed to terms on a 3-yr/$63M contract extension with the San Francisco 49ers.

According to ESPN's Adam Schefter, the 49ers signed star linebacker Fred Warner to a three-year, $63 million contract extension on Monday that includes over $56 million in guaranteed money, making him...