@Sadistic Senpai I think last chance Pedro will appear in Wano, is with Jinbe's arrival. Jinbe was from WCI, so it makes most sense that if Pedro ever comes back, he will appear together with a character that's also coming from WCI. But that didn't happen, Jinbe came alone, so...
"Why not with Nekomamushi? Pedro is Neko's man not Jinbe"
Because Neko doesn't arrive from WCI. Last time he was shown, he was in Marco's island.
So for Pedro to appear with Nekomamushi, the scenario more or less has to be:
1. Pedro came from WCI along with Jinbe
2. Somehow they meet Team Neko on the way
3. Pedro grouped himself with team Neko, while Jinbe that can move faster in sea, reach Wano earlier than Team Neko.
But this doesn't make many sense because:
1. Until now Jinbe never mentioned about Team Neko that they met on the way. If he wants to talk about it, best time is right now, when the full war hasn't started yet.
2. It's weird anyway that Jinbe travels alone and leaving Team Neko behind. Why not coming together?