Biggest offseason developments: The Bears re-signed Kyle Fuller to a four-year, $56 million deal with $18 million guaranteed. … Prince Amukamara returned on a three-year contract worth up to $27 million, also with $18 million guaranteed. … After releasing Marcus Cooper in March, the Bears brought the veteran back two weeks later on a one-year, $1.5 million deal.

Currently on roster: 13.

Projected on final roster:6-7.

Roster locks: Kyle Fuller, Prince Amukamara.

Good bet: Bryce Callahan.

On the bubble: Sherrick McManis, Marcus Cooper, Cre’Von LeBlanc, John Franklin.

Practice squad candidates: Kevin Toliver, Doran Grant, Michael Joseph, Rashard Fant.

Camp depth: Jonathon Mincy, Nick Orr.

What to like: Continuity has been the buzzword all offseason for the Bears defense. And that’s certainly a key element at cornerback, where incumbent starters Fuller and Amukamara will both look to build off promising 2017 campaigns.

Fuller, whose roster spot seemed to be in jeopardy at this time a year ago, turned in an encouraging performance in his contract season. He had 22 passes defensed, second most in the league, and had interceptions off Jimmy Garoppolo in Week 13 and DeShone Kizer three weeks later.

Fuller’s reward? That hefty four-year contract and the full confidence of his teammates and coaching staff.

“He’s a great example of a Bear, how you want a guy to represent our team, play hard and be a good teammate,” defensive backs coach Ed Donatell said. “I’m very, very pleased that he’s back. He’s better now. He’s more of a leader. His confidence is up.”

Added Amukamara: “Let’s be frank. He was on the edge going into training camp last year. And it says a lot about his character that when his back was against the wall, when his (fifth-year contract) option wasn’t picked up, when he was dealing with coming back from injuries, he kept his head down and bounced back. And even when he started playing great, he didn’t let that go to his head. He continued to work.”

Amukamara himself turned in a solid first year with the Bears, even if his statistics (48 tackles, seven pass breakups, zero interceptions) were far from attention-grabbing. His consistency and reliability was much appreciated by Donatell and coordinator Vic Fangio. And with full comfort in Fangio’s system, both Amukamara and Fuller should be ready to hit the ground running when camp begins.

Biggest question: Is Amukamara serious? Heading into his eighth NFL season, the 29-year-old veteran has set a lofty individual goal for 2018. Ready for it? “I’m really looking for a 10-pick season,” Amukamara said last month.

This from a corner who has seven career picks and none since intercepting Kirk Cousins in September 2015. For Amukamara, that was 37 games and two teams ago.

Needless to say, if Amukamara makes it halfway to his 2018 goal, it will be considered a terrific season. But he also makes no apologies for thinking big.

“I’m reaching for the stars, right?” he said. “But at the same time, I know what I’m capable of. I know how hard I’ve worked. And every year I keep putting those goals out there. Because when it finally does happen, I can circle back to the time that I said it.”

Fresh face: Kevin Toliver left LSU after his junior season but then went undrafted in April. Now the 22-year-old defensive back must prove to Fangio and Bears coach Matt Nagy that his upside is worth a roll of the dice. Toliver was a five-star recruit coming out of high school and has prototypical size at 6-foot-2, 192 pounds. But he also had injury setbacks at LSU and was suspended on two occasions for violating team rules.