Costa recently told that he wants to fight Chimaev. And I feel like this fight is never going to happen. I have a feeling that Costa is going to lose tomorrow and released from UFC. He is too much problematic for UFC. Either cancels fight when it is about to happen, or ask for more and more money. Feel like UFC are tired of him.
Chimaev fights DDP. But Chimaev fights so rarely, that its either decrease in motivation, or he is bored with fighting. Or his endless health issues. Ive read somewhere that he has either congenital problem with immune system, or something was removed/replaced due to illness. Long story short, as soon as he starts weight cutting, his body looses all imminity and he catches all pokemons viruses.
If Chimaev loses against DDP then it could happen. Fighting Costa would help him get back on track esp how Costa just won as an underdog at 318.

And here's the thing, they got some beef going on... The UFC loves that sht.
Here are the results. Some underdogs won. Lol. And it's nice to see Patricio win one in the UFC. Hopefully more of the greats in Bellator and the PFL make the crossover to the UFC.
Max Holloway def. Dustin Poirier
Paulo Costa def. Roman Kopylov
Daniel Rodriguez def. Kevin Holland
Patrício Pitbull def. Dan Ige
Michael Johnson def. Daniel Zellhuber
Vinicius Oliveira def. Kyler Phillips
Brendan Allen def. Marvin Vettori
Nikolay Veretennikov def. Francisco Prado
Ateba Abega Gautier def. Robert Valentin
Islam Dulatov def. Adam Fugitt
Jimmy Crute def. Marcin Prachnio
Ryan Spann def. Łukasz Brzeski
Brunno Ferreira def. Jackson McVey
Carli Judice def. Nicolle Caliari