Stevenson vs Jack: Badou Jack has spotted signs of decline in James DeGale but is open to a rematch

Badou Jack says James DeGale is "not the same fighter" since they battled to a draw, but is open to a rematch at light-heavyweight in Britain.

'The Ripper' has moved up in weight following his punishing battle with DeGale in January 2017, and will challenge Adonis Stevenson for the WBC belt in Toronto on May 19, live on Sky Sports.

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Adonis Stevenson defends his WBC light-heavyweight strap against Badou Jack in the early hours of Sunday morning...

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DeGale regained his IBF super-middleweight title after defeating Caleb Truax on points in their April rematch, although Jack says his former opponent has shown signs of decline.

"I wasn't so impressed," Jack exclusively told Sky Sports. "All the tough fights he's been through, I think he's not the same fighter anymore.

"But he always shows heart, he's got a lot of heart, but I wasn't impressed with his last performance.

"I think it could have gone either way, or a draw, or maybe even a loss. You've got to give him credit, he shows a lot of heart."

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There was heated debate after Jack's draw with DeGale was announced, with both men arguing about a return bout, and the Las Vegas-based fighter insists he would consider another clash with 'Chunky' at 175lbs.

"I love the UK fans, I would love to fight in the UK before I retire," he said.

Referring to the DeGale rematch, Jack said: "If he comes up to light-heavyweight, and he continues to win, maybe yeah.

"But I can't make super-middleweight no more, so if you want to come up, sure. You've got to ask him if he wants it."

DeGale's bitter rival George Groves also faced Jack, suffering a split-decision defeat in 2015, but 'The Saint' earned the Sweden-born boxer's respect with his performances after that night in Las Vegas.

"He's done good," said Jack. "I'm not really sure who are all the guys he's fought? They might not be at the top, top level.

"To have four title shots, and finally win one, that's a real champion. You take a loss and you can bounce back. That's what boxing is all about."

Watch Adonis Stevenson's WBC title defence against Badou Jack in Toronto on Sunday May 19, from 2am, live on Sky Sports Main Event and Sky Sports Action.