BOSTON – For now, Nick Diaz remains retired. But if he wants to come back, UFC President Dana White has an offer for him: Lyoto Machida in a middleweight contest. “I talked to Diaz today, and I made him an offer, so we’ll see what happens,” White said. “He had been talking about going to 185 pounds. Machida has been talking about going to 185 pounds. So we wanted to see if he wanted to fight Machida at 185.” White revealed his offer during a special Q&A session at Boston’s Barrio Cantina, where he appeared as part of a fundraising effort for The Shawn Thornton Foundation at an event billed as the UFC Homecoming