Dana White, UFC president, would have felt "betrayed" by Francis Ngannou’s actions following Tyson Fury’s latest fight.
After Fury's sixth-round defeat to Dillian Whyte at Wembley, the promotion's heavyweight champion entered into the ring to discuss a cross-over clash with the WBC king.
Francis Ngannou spoke out about a cross-over clash with Tyson Fury
Ngannou, 34 years old, has a contract with the MMA chief until December - a fact that former title challenger Chael Sun believes would have irked White.
On his YouTube channel, he said: "I would suppose that Dana probably felt betrayed. He likely hurt his feelings.
He wouldn't tell you. He'd likely tell you that he was p ****d off, or that he didn’t care at all. He was probably betrayed in a small way.
"Francis Ngannou [watching Fury] was there." Francis knew he was there, Francis is under contract to Dana.
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"Did Francis's team let Dana know that he was going to be there?" He was going to get in the ring for someone else.
"That this was going to be broadcast around the globe? The announcers were already waiting when Francis entered the room.
"Those announcers were aware of it and knew how to sell it."
Sonnen, a former UFC middleweight champion and light-heavyweight title challenger, doesn't see Ngannou being a free agent in 2012. He insists that his contract will not expire in December.
Get a PS10 Bonus with 100s of Games to Play and No Deposit RequiredHe stated that contracts don't just expire as the media leads you to believe.
"The media has led your guys to believe it's the end of this calendar year. I think it's December. Francis is free to leave. It's not what I signed."
Ngannou already turned down a PS5million contract with the UFC because they allegedly refused to allow him to box simultaneously.
And the Predator is not planning to sign a new agreement unless Fury's fight is included.
During an appearance on The MMA Hour he said: "The Tyson Fury fighting has to be part the discussion.
"That is not an option. It must be part of any discussion.
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"If I sign a contract that is basically the same as the one I signed, it's a disaster.
"That won't happen ever. We need to find a way to make this into a contract.
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