The popular Diaz meets Michael Johnson at UFC on FOX 17 on Dec. 19, it was announced Monday night on FOX Sports Live.
Diaz (17-10) has not been in the Octagon since a unanimous decision loss to now-champion Rafael dos Anjos last December. However, he was involved in an altercation along with his brother Nick against fellow UFC lightweight Khabib Nurmagomedov and others at a World Series of Fighting event earlier this month. Diaz, 30, owns wins over Donald Cerrone, Jim Miller and Gray Maynard in his career.