Jalen Mills signed a four-year contract with the New England Patriots after spending five seasons with the Philadelphia Eagles and winning one Super Bowl with the team.

Mills, a defensive back, was on the Eagles when they beat Tom Brady, Bill Belichick and Patriots in Super Bowl LII. It’s only been a few years since that game and Mills now finds himself playing for Belichick.

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And he still can’t believe it.

"I think it was two days ago. We were in walk-through and going over certain defensive calls, and I was working a certain technique, and he was standing right next to me, and he kind of like started coaching me up … When I went to the sideline, it was kind of like the same thing, I was like … ‘Coach Bill is coaching me.’ It’s crazy to me," Mills told reporters Thursday, via WEEI Radio.

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"But I think that’s a great feeling, though. That’s me wanting to give him everything that I have. At the end of the day, he didn’t have to do that. That’s his job, but he’s a head coach. That’s what he has assistants for. I definitely appreciate it."

Mills said he’s still learning the defense, and he’s unsure, as of now, where he will play in the secondary.

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Mills played in 15 games for the Eagles in 2020. He had one interception and 74 total tackles. In 63 career games, he recorded five interceptions and 283 total tackles.