http://www.darkhorizons.com/star-wars-trevorrow-rumors-solo-posters/
“Sources” claim that Colin Trevorrow was ousted for trying to give certain parts of the fanbase what they really wanted. Not because the producers didn’t like his big shot attitude or that they saw Book of Henry.
I call major bs on that. The timeline doesn’t make sense, Rian would’ve already finished his script by the time Colin was hired, so if he didn’t want to continue that story he would’ve been fired a long time ago. Not to mention TLJ was basically all done by the time he was ousted, so that doesn’t really make sense that he be so adamant to change something that’s already more or less set in stone.