It appears that Joaquin Buckley was once slated to face off against Alex Pereira. However, the fight ultimately did not come to fruition.
Reports suggest that the only reason the bout fell through was due to an issue on “Poatan’s” side.
https://www.sportskeeda.com/mma/news-i-planning-knocking-man-out-joaquin-buckley-calls-alex-pereira-passing-short-notice-fight-2022