Kershaw, 28, is courting the role of Tirana in movie, reported Aceshowbiz.
If signed, she will join Idris Elba and Matthew McConaughey, who is expected to be the main villain, Walter Padick aka Man in Black.
The film will be based on the first book in the series "The Gunslinger", which revolves around Deschain, part of a knightly order of gunslingers, who is on a quest to find the tower before evil invades and destroys it.