Celtics Jaylen Brown attacks Nike after co-founder announces it’ll likely cut ties with Kyrie Irving “Since when did Nike care about ethics?” Jaylen Brown defended Kyrie Irving on Thursday. John Tlumacki/Globe Staff When Nike co-founder Phil Knight revealed that the company would likely end its relationship with Nets guard Kyrie Irving, a former Celtics teammate of his appeared to come to his defense. Jaylen Brown criticized Nike on Twitter not long after Knight made the statement. “Since when did Nike care about ethics?” Brown tweeted. Nike has been under fire for several years over its alleged use of sweatshops and...