Bill Belichick has infiltrated Dove Valley, but in a way beneficial to those who inhabit its NFL headquarters.

When the Broncos acquired AJ Derby, shipping off a fifth-round pick to the Patriots, they received a young, athletic tight end with a ton of upside.

And inside knowledge of New England's playbook.

"I remember everything," Derby said this week, according to The Gazette. "I have a good memory."

Derby, who spent his only season with Belichick on injured reserve, was pressed further but wouldn't spill the beans. At least publicly.

"I'm not a coach. I'll just give the information I have and we'll move on from there," he said.

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A 2015 sixth-round selection, Derby battled back from injuries to turn in an impressive 2016 preseason, catching 15 balls for 189 yards and a touchdown -- and the eye of Broncos GM John Elway, who traded for the former Razorback in late October.

Slow out of the gates in Denver, Derby has since, unofficially, won the team's starting tight end job, outworking Virgil Green. He had his most impressive performance in Week 15, hauling in five passes for 57 yards, but fumbled away the Broncos' fourth-quarter comeback attempt.

Nevertheless, considering their offensive struggles, Derby is another pass-catcher to aid second-year quarterback Trevor Siemian, and he'll be significantly involved against his former club.

This isn't lost on the Hooded One.

"Smart kid. Really smart. Good hands. Works hard," Belichick said in a conference call.

In Belichick-speak, that roughly translates to, "We have a plan for him." We'll see if it's counteracted by Derby's apparently photographic memory.