Unfortunately, unlike Zack Snyder’s Justice League, which is a thing that is happening, and a David Ayer cut of Suicide Squad, which is at least theoretically possible, we’ll never get a Lord Miller cut of Solo. The pair were let go in the middle of filming, and so there certainly isn’t enough footage shot by the pair to make a finished film.
Article source: https://www.cinemablend.com/news/2547663/apparently-solo-a-star-wars-story-had-different-plans-for-lando