The Transformers director announced on his website that the stunner will join him for the remake of the popular 90s franchise, reports FoxNews.com.
"TMNT: we are bringing Megan Fox back into the family!" Bay wrote.
As RadarOnline.com previously reported, Fox, who starred in the first two installments of the Transformers franchise, and Bay had a falling out after the actress made controversial comments about the mercurial director during the press tour for Transformers: Revenge of the Fallen.
"He wants to be like Hitler on his sets, and he is," the Jennifer's Body beauty star told Wonderland magazine. "So he's a nightmare to work for but when you get him away from set, and he's not in director mode, I kind of really enjoy his personality because he's so awkward, so hopelessly awkward."
For more on the unlikely reunion, visit FoxNews.com.