Former “Last Chance U” star John Franklin III is used to making big changes in his football career.

He played quarterback and wide receiver at four different schools during his college career, and now in Chicago, he’s moving to a new position: defensive back.

He told the Chicago Sun-Times he had never played on that side of the ball until after he went undrafted. He had a tryout with the Seattle Seahawks before the Bears’ rookie minicamp, and Pete Carroll had him work in the secondary.

It’s a difficult switch for any player to make, let alone an undrafted rookie free agent who’s also trying to adjust to the speed of the NFL.

Franklin III is relying on his background on offense to help speed up his transition to the other side of the ball.

“The defense I pick up real fast because I know what it looks like as a quarterback. I know what I’m facing. I know how to stop it,” Franklin III said. “So mentally, I feel like I’m ahead of somebody that just moved over. I learned everything from the eyes of the person looking across the field. That’s one of my biggest advantages, and I’m using that.”

He has as big of an uphill battle as anyone on the 90-man roster. The Bears’ entire secondary from 2017 returned this offseason, and there aren’t too many spots up for grabs on the final 53.

Franklin III is seeing the process one step at a time and only focusing on how he can continue to improve.

“Last week was my first week playing , and I feel like I’m 10 times better already,” Franklin III said. “I can’t be Richard Sherman tomorrow. But I can work one thing, and once I get that perfected, I can move to the next.”