Thiago Santos could be heading back to the Octagon in September…

The UFC is in the process of finalizing a fight between the 36-year-old Brazilian mixed martial artist and Glover Teixeira.

The matchup wouldheadline a September 12 card, according to ESPN.

The fight of the Brazilians would pit two of the promotion’s top light heavyweights against each other. Santos is ranked fifth in the division in ESPN’s latest rankings; Teixeira comes in at seventh.

Santos (21-7-0) hasn’t fought since a decision loss to Jon Jones last July. Teixeira is coming off a victory against Anthony Smith in May that marked his fourth straight victory.