Who says you can’t come home?

Cam Newton returned home to Carolina last week when the Panthers signed him, and on Sunday he gets to play against his former Panthers head coach, Ron Rivera, who now coaches the Washington Football Team.

Newton, who played for the Patriots last season, was signed to a one-year contract by the Panthers when Sam Darnold landed on injured reserve with a shoulder injury.

Sunday will mark the first time Newton’s first start with the Panthers since Sept. 12, 2019, when Carolina lost to the Buccaneers, 20-14. He played for the Panthers from 2011-19.

Last Sunday in a stunning 34-10 upset victory at Arizona, who entered the game with an 8-1 record, Panthers coach Matt Rhule inserted Newton for eight plays, and he made an immediate impact — completing three of four passes for 8 yards and a touchdown and rushing three times for 14 yards and a touchdown.

Newton scored TDs on his first two snaps, which made him the first quarterback in the past 30 years to run for a TD on his first rush of the season and throw a TD his first pass of the season. They also gave Carolina an early 14-0 lead.

“I’m just floating at an all-time-high frequency,’’ Newton told reporters after the game. “It’s almost scary.’’

Newton’s return to the Panthers was, indeed, a euphoric one.

Now comes the hard part: Helping 5-5 Carolina make the playoffs as its starter again. Newton is 7-16 as a starter in his past 23 starts, which includes losing his last eight with the Panthers and a 7-8 record in New England last season.

His one season with the Patriots was respectable but not remarkable. He completed 65.8 percent of his passes for 2,647 yards, just eight TDs and 10 interceptions. He was more productive with his legs, rushing for 592 yards and 12 TDs.

When Rivera was asked last week if he has ways to game-plan his former quarterback he said, “Yes, actually I do, to be honest with you.”

Newton went 66-55-1 with Rivera as his Carolina coach. They won three NFC South titles and reached Super Bowl 50 in 2015. Rivera won NFL Coach of the Year twice, and Newton made three Pro Bowls and won MVP in 2015.

On a Monday guest appearance on “The Herd with Colin Cowherd,” Rivera said he’s “looking forward’’ to facing Newton, saying, “It’ll be interesting.’’

“I’ve always been a big fan of his just because he’s the right type of guy,’’ Rivera said. “I’m happy for him, happy he got this opportunity again because he went home to Carolina where he started his career.”

Newton is so fired up about his return to Carolina he’s giving away 50 tickets for Sunday’s game to Charlotte-area fans who otherwise wouldn’t be able to go to the game.

“This Sunday is important for us,” Newton told reporters. “We need to reclaim Bank of America Stadium. I know the success hasn’t been there [recently], but we ain’t talking about the past. We’re talking about the things here moving forward.’’