http://screenrant.com/captain-america-director-joe-johnston-boba-fett-movie-rothc-123936/
“You know if he wants to see it, I would show it to him. I’m trying to get George to make a feature based on Boba Fett.”
When asked if he would direct the film Johnston said simply, “I would like to, it would be a lot of fun.”
If they did this, I think it could go either way depending on how much Lucas wants to get involved in the project.