The Jets have not gotten to see what first-round pick Quinnen Williams can do yet, but Alabama coach Nick Saban is pretty sure they are going to love it when they do.

Williams has been limited by a right calf injury this spring and has been held back in practice as a precaution. While Adam Gase and Co. wait to see what the No. 3 overall pick can do, Saban said the Jets got themselves a good one.

“The guy’s a really smart player,” Saban told The Post in a phone interview Wednesday. “He really understands football. He looks for things that are going to help him play better. A lot of guys just go out there and rat trap [freelance] it. He’s not that kind of player. He’s got really good initial quickness and he’s got enough strength and power to be able to hold the point when he needs to, but he’ll use his quickness when he needs to to penetrate and make plays. I think that helps him a lot as an inside pass rusher.”

The Jets hope the 6-foot-3, 303-pounder can be an anchor in the middle of Gregg Williams’ defense with the versatility to play all over the line and team with Leonard Williams to give them a fierce pass rush up the middle. Williams had 19.5 tackles for loss and eight sacks last year for the Crimson

Tide and was viewed by many people as the best player in the draft.

Saban believes Williams is the perfect fit for the pass-happy NFL.

“I think because the game has changed a little bit,” Saban said. “There’s not a lot of what I call wad ball, where everybody’s in a tight formation trying to run the ball like 20 years ago. Everything is a little more spread, a little more empty. … There’s more loose plays so the more athletic guys that can move, rush, play in space, have range as players I think they’re a lot more valuable today than a big, old guy that can just hold the point and you can’t block him on the run but he doesn’t offer you much on the other downs.”

Williams has participated in the team’s mandatory minicamp this week in a very limited fashion, working with the third-team defense. Gase said the plan is for Williams to be a full participant in the final week of OTA practices next week and get some work with the first- and second-team defenses.

“Him being with the group he’s with right now, he disrupts everything,” Gase said. “We’ve got to get him up in those first two groups. Coming up probably next week, he’ll be rolling with those guys. It will be more challenging for him. I think right now you can see a difference between his skill set and the guys he’s going against.”

Gase said Williams always has a smile on his face no matter what he is doing. It is evident that he loves football. Williams has been humble in his comments and was in awe when he met some of his teammates, such as Le’Veon Bell and Leonard Williams.

“I think that probably comes from the fact that Q was not a heavily recruited guy in high school, not because he wasn’t a good player, but because of his size,” Saban said. “He kind of came up the hard way. He wasn’t some five-star guy that people had expectations for. He knew he had to work his way into becoming a player that could be a starter and get recognized for having a lot of production. That’s kind of his M.O. as a person, too. He’s got a lot of humility, tries to do things the right way. He’s always been that way.”

Saban lauded Williams’ athleticism, which separates him from other defensive linemen.

“He’s a very athletic guy,” Saban said. “A lot of these guys that have been some of our best players — Jonathan Allen [a defensive tackle with the Redskins], him — they were a little undersized coming out of high school. They only weighed maybe 240, but they were very athletic, very quick twitch, very fast. Then, they kind of grow into bigger people while they’re here, but they still have that athletic twitch and suddenness about them that make them special.”