I really hope this isn't true because this is the brass neck to beat all brass necks (link credit to several lovely Twitter posters) www.looper.com/217223/eddie-redmayne-reportedly-wants-j-k-rowling-let-go-from-fantastic-beasts-franchise/
If it is and I were JKR I'd make sure he never worked in film again, not that anyone would want to hire anyone who displayed this appalling behaviour - especially not someone as mediocre as Redmayne.