The Patriots agreed to a five-year, $40 million extension with nose tackle Vince Wilfork on Friday, according to a league source. The deal includes an $18 million signing bonus and $25 million in guaranteed money, making Wilfork the NFL's highest-paid nose tackle. Wilfork confirmed the agreement, writing the following on his Twitter account: "We are pleased to say we will be here for many more years to come."