Certainly, since X-23 is a fan favorite character from the comics and Keen’s performance as Laura is garnering early praise, she seems like an obvious choice for a spinoff movie from Logan.
In the X-Men comics, Laura Kinney aka X-23 is a clone of Logan who has similar adamantium claws (though she has two in each hand and one in each foot).
Plus, considering Logan takes place in the future of the X-Men universe, it severely limits which other characters could be included in the potential spinoff.
There are a few roadblocks in the way of a potential X-23 film, not the least of which being Keen’s younger portrayal of the character.