Not even Chris Harris Jr. can deny Amari Cooper's greatness.

It's not every day that a Denver Broncos cornerback puts the bitter AFC West rivalry aside and praises an Oakland Raiders wide receiver, but that's exactly what Harris did while discussing Cooper on NFL Network's Top 100 Players of 2017.

The Oakland Raiders are hard at work in the offseason training program. Want the latest news sent straight to your inbox? – Sign up for our FREE Raiders newsletter now!

Via NFL Films on Twitter:

"Getting off the press and route running I think Cooper's probably one of the best in the league already," Harris said. "Coming into his third year in the league. Man, he makes it hard for me going against him twice a year and he's great competition for sure."

In two games against the Broncos last year, Cooper caught 10 passes for 95 yards and a touchdown. As a rookie, he had 47 yards on four receptions in the first matchup but was shutout on eight targets in the rematch.

The Broncos have handled Cooper so far, but that could change in 2017. The two-time Pro Bowler, who came in at No. 53 on NFL Network's annual countdown, has been dropping hints that a breakout year is on the horizon.

The AFC West is a close division at the top, and the Raiders need Cooper to provide them with any advantage they can get over the Broncos.

Follow Kevin Boilard on Facebook and Twitter.