Although there were three, now there is only one...should she want it, that is.
Lea Seydoux has been offered a starring role alongside Channing Tatum in the new X-Men series, Gambit. (Although, why she would turn it down, I have no idea.)
Two other actresses, Mission: Impossible – Rogue Nation's Rebecca Ferguson and Mad Max: Fury Road's Abbey Lee, were also offered a shot. Ferguson turned it down and Fox offered the role to Seydoux.
Gambit and Bella Donna Boudreaux come from opposing guilds, The Assassin's Guild (Bella Donna) and Thieves's Guild (Gambit).