FLORHAM PARK, N.J. — Twelve Jets didn’t practice on Wednesday, all but one because of injury. The most troublesome seemed to be center Nick Mangold, who has a sprained ankle, and running back Bilal Powell, who suffered a case of turf toe last Sunday.

Brandon Marshall was out with a new injury to his foot, but the wide receiver did not sound concerned. Cornerback Buster Skrine (knee) and defensive end Muhammad Wilkerson (ankle) also missed practice.

“It’s alarming to see so many,” coach Todd Bowles said. “But hopefully by [Thursday] or Friday we’ll get some of these guys back.”

Sheldon Richardson was excused for personal reasons. The Jets placed Geno Smith (torn ACL) on injured reserve and signed linebacker Taiwan Jones.

McCown practices

It looks as if the Jets will be facing veteran quarterback Josh McCown on Sunday in Cleveland. McCown returned to practice for the first time since breaking his collarbone in Week 2.

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Marshall, who played with McCown in Chicago, had nothing but praise for his former teammate.

“That was our leader,” Marshall said. “He’s a stud. He led up, he led down. When he wasn’t starting in Chicago, he kept all of the guys together.”

Browns rookie quarterback Cody Kessler is sidelined with a concussion. He was replaced last Sunday by another rookie, Kevin Hogan, in the Browns’ 31-17 loss to Cincinnati.

Apparently the Jets are convinced the Browns are the best 0-7 team ever.

“Probably one of the toughest teams because they fight,” Marshall said. “That’s impressive when you look at their record. But now they have Josh back. He’ll have those guys fired up and ready to play.”

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Said Bowles: “Tough team. They score a lot of points. They’ve been in every game. They’ve lost some in the fourth quarter at the end, so we expect a tough game.”