Alex Caceres will meet Cole Miller at UFC 199 next month.
Set for June 4 from The Forum in Los Angeles, Caceres steps in on short notice as a replacement for BJ Penn.
The former UFC champion was removed from the card after a potential violation of the anti-doping policy was reported concerning IV usage by Penn.
Caceres (11-8) got back on track with a decision win over Masio Fullen in January following three consecutive losses. He is 5-3 with one no-contest since 2012.
Miller (21-9) replaced Dennis Siver in the original matchup and is coming off a no-contest in January with Jim Alers. Prior to that, he had won two of three.
Below is the current lineup, which will likely see a shift in the FS1 prelims:
Event Date: 2016/06/04
Venue: The Forum
Location: Los Angeles
MAIN CARD (PPV/10 p.m. ET)
UFC Middleweight Championship
Luke Rockhold (c) vs. Michael Bisping
UFC Bantamweight Championship
Dominick Cruz (c) vs. Urijah Faber
Featherweight: Max Holloway vs. Ricardo Lamas
Middleweight: Dan Henderson vs. Hector Lombard
Lightweight: Dustin Poirier vs. Bobby Green
PRELIMINARY CARD (FOX Sports 1/8 p.m. ET)
Featherweight: Cole Miller vs. Alex Caceres
Featherweight: Clay Guida vs. Brian Ortega
Lightweight: Beneil Dariush vs. James Vick
Strawweight: Jessica Penne vs. Jessica Andrade
PRELIMINARY CARD (UFC Fight Pass/6 p.m. ET)
Welterweight: Sean Strickland vs. Tom Breese
Light Heavyweight: Luiz Henrique da Silva vs. Jonathan Wilson
Middleweight: Kevin Casey vs. Elvis Mutapcic
Lightweight: Polo Reyes vs. Dong Hyun Kim