It has yet to be revealed by the brass at Marvel Studios if we are ever going to see Paul Bettany return as Vision in the Marvel Cinematic Universe following the conclusion of WandaVision.
Paul Bettany, who made his MCU debut as the voice of Jarvis in Iron Man, the movie that started it all, returned as Vision in WandaVision.
This to say, we may not see White Vision any time soon, but Kevin Feige and the brass at Marvel Studios could certainly circle back to Paul Bettany at some point down the line.
This to say, there will be ample opportunity for Paul Bettany to return, and he has indicated in the past that he would be happy to keep playing Vision.