On path to superstardom, Celtics’ Isaiah Thomas controls his own destiny Thomas, who will be a free agent in 2018, is long overdue for a pay day. Check out this story on greenbaypressgazette.com: http://usat.ly/2mgxxtg When the NBA’s salary cap started spiking as if it had been hit with a defibrillator last summer, Boston Celtics point guard Isaiah Thomas was asked to share his perspective on how the league’s new landscape might ultimately impact his situation.