Chris Russo talks Alex Rodriguez’s Mets dream, ideal partner after Mike Francesa

Chris Russo, former WFAN Mike Francesa partner on “Mike & the Mad Dog,” launched his own SiriusXM channel in 2008, Mad Dog Sports Radio, where he hosts “Mad Dog Unleashed” from 3-6 p.m. on weekdays. He is never short on opinions, and gave Post columnist Steve Serby plenty of them in a Q&A. Q: Who…