Their February tilt will take place at openweight, according to MMA Fighting's Ariel Helwani.
Regarding Shamrock vs. Gracie 3, it will take place at open weight. Texas commission has already approved it.— Ariel Helwani (@arielhelwani) November 7, 2015
The event will take place at the Toyota Center.
Shamrock returned after five years away from the cage to fall by first-round knockout to Kimbo Slice at Bellator 138 in June. Gracie, the UFC 1 winner, has not competed since 2007. Shamrock is 51 years old and Gracie is 48.
Slice will take on Dhafir "Dada 5000" Harris in the co-main event in February, it was also announced Friday night.