Complex sentence: Head coach Eric Mangini, who expected Revis to contribute immediately to the team for his abilities on defense and special teams, likened Revis' talents to that of Ty Law who was once described as a "shutdown" cornerback.
Split into simpler sentences: Head coach Eric Mangini expected Revis to contribute immediately citing his abilities on defense and special teams. He likened Revis' talents to that of Ty Law who was once described as a "shutdown" cornerback.