By Chris Rosvoglou On Monday night, Dallas Cowboys legend Michael Irvin posted a heartfelt message on Twitter for Deion Sanders. “This dude @DeionSanders and I were meant to be together and BOYS FOREVER,” Irving wrote. “Hey Coach I can’t imagine what we were talking about here. Love you man.” Irvin’s tweet about Sanders has Cowboys fans reminiscing this week about the ’90s dynasty. “Can you imagine what these practices was like,” one fan tweeted. “Two all-time greats,” a second fan said. “Imagine how many rings these guys could’ve won if Jerry Jones didn’t cut the cord on Jimmy Johnson,” ano…