By Daniel Chavkin Tampa Bay made the move to open up cap space for the offseason. View the original article to see embedded media. The Lightning announced Sunday they traded defenseman Ryan McDonagh to the Predators for defenseman Philippe Myers and forward Grant Mismash. McDonagh is in the middle of a seven-year, $47 million contract he signed with Tampa Bay in 2019. The Lightning originally acquired McDonagh from the Rangers via trade in 2018, and the defenseman was crucial in the team’s two Stanley Cup titles in 2020 and 2021. At 33 years-old, McDonagh is not what he used to be with the Ran…