The unbeaten 25-year-old faces the toughest test of his career against Rebrasse tonight at the Echo Arena in Liverpool.
Fellow Merseysider Fielding also features on the bill, taking on dangerous Texan Brian Vera, and the two hot super-middleweight prospects appear to be on a collision course if they remain unbeaten.
There is no bad blood between the local men, who share a mutual respect, but Smith believes a future meeting is inevitable as they continue to climb the rankings.
???We???re from the same amateur gym, we get on,??? he told Sky Sports. ???We don???t not like each other. We???re both from Liverpool, we???re both super-middleweights, we???re both unbeaten so we know it???s going to get talked about.
???The more we keep winning, the more people are talking about it. I do think it???s a fight that will happen if we keep on winning.???
Before switching his focus to Fielding, Smith must first get past the Frenchman, who gave Groves an uncomfortable 12 rounds before the ???The Saint??? emerged with a points win. ??????
???He was last seen over here giving George Groves a tough night so he???s boxed at a high level and given a good account of himself,” Smith said.
???He???s a former European champion. I think he took Groves out of rhythm, set a good pace. Groves tired at the halfway mark and he came on strong.
???He???s a good 12-round fighter, he keeps the same pace for the 12 rounds and I know I???ll be in for a tough night. He???s coming to give me problems, but it???s one that I feel I???m ready for.???
Smith has collected 16-straight wins, with 12 coming inside the distance, but his trainer Joe Gallagher is wary of the threat posed by Rebrasse, a fighter who has never been stopped.
???They are coming over to try and do a number on Callum,??? said Gallagher. ???It???s the first time I???ve said to Callum that you???re facing someone who has trained specifically for you, who has studied you, worked on your weaknesses.
???That has upped Callum???s game in training camp and I???m really looking forward to a good fight.???