This clash in Razgrad could decide which one of these two sides will be playing League D football come 2024.
Back in June, these two teams played out a 1-1 draw by the Rock of Gibraltar.
Georgi Minchev broke the deadlock in first half stoppage time, but Liam Walker ensured the home side left with a point.
Will there be a winner this time?
Gibraltar are competing in League C for the very first time and, aside from that aforementioned draw, have struggled to make the step up.
In fact, Julio César Ribas’ team have actually lost their other three matches, conceding ten times and scoring none.
This means they’re winless in 21 fixtures, including friendlies, surely needing to end that streak here to have any chance of survival.
Bulgaria meanwhile are also yet to win in this group, but their only defeat came at home to Georgia, a heavy 5-2 hammering.
The Lions though did battle to a goalless game in Tbilisi last time out, having also held North Macedonia to a draw on matchday one.
So, Bulgaria have actually only won three of their last 30 competitive games, but victory here for Mladen Krstajić’s side would secure League C survival, in turn sending Gibraltar down.
Can the away side cause a big upset at Huvepharma Arena?