Well considering how good Oda was with his parallels in the New World with Paradise, I think he foreshadowed a new parallel with Sanji and CP0 being in the same chapter. Given how the theory that Sanji is nobility and therefore connected to the Celestial Dragons there is no doubt that CP0(who work directly under the Celestial Dragons) will clash with Sanji at some point. If CP0 gets a job to capture Sanji "alive" that will open the possibility for another "rescue arc", a la Enies Lobby where Robin was the person IMPORTANT to the WG. Even if Sanji is not nobility, but like Robin IMPORTANT, surely the WG will send someone of trust to capture him as they say ALIVE.
This brings me back to the parallel, we will surly be introduced to Sanjis PAST just like Robins during CP9, so Sanji's capture by CP0 will open the CP0 arc parallel to the CP9 arc in Paradise. For all this to happen Zou/Wano need to past as the parallel to Jaya/Sky Island.
So my point is that the one to be dispatched to capture Sanji ALIVE will be CP0 thus opening the arc to parallel a CP9 arc in Paradise, as a new rescue arc.
This brings me back to the parallel, we will surly be introduced to Sanjis PAST just like Robins during CP9, so Sanji's capture by CP0 will open the CP0 arc parallel to the CP9 arc in Paradise. For all this to happen Zou/Wano need to past as the parallel to Jaya/Sky Island.
So my point is that the one to be dispatched to capture Sanji ALIVE will be CP0 thus opening the arc to parallel a CP9 arc in Paradise, as a new rescue arc.