UFC no. Because they would settle on a good long reigning heavy weight champ if they were scripting it.
However it has been known in some of Japan’s mma to have fighters lose for the hype. Then again Japanese mma grew out of pro wrestling so it’s kind of understandable.
The closest to American mma doing something like that was EliteXC and it was only offering extra bonus if the fighter fighting Kimbo would win by KO. This encouraged, but not restricted, the fighters to fight stand up with Kimbo. When this hit the news(for influencing how the fighters would fight) EliteXC was destroyed, so I doubt UFC will pull off something like this.