Looking at the sanctions guidelines, the punishment is most likely to be a one match touchline ban and a fine (due to it being an admitted charge).
Before anyone panics themselves by seeing the potential punishments for aggravated breaches, the criteria for it being aggravated is;
"An aggravated breach of FA Rule E3 occurs when an individual uses improper, abusive, or insulting language or behavior that includes a reference to a protected characteristic. These characteristics include race, ethnic origin, nationality, color, religion, belief, gender, gender reassignment, sexual orientation, or disability"