By Zach Koons The team has an important decision to make regarding the rising fourth-year signal-caller in the offseason. Following a difficult year that saw him land in the league’s concussion protocol twice, Tua Tagovailoa is not more susceptible to concussions than any other player, Dolphins general manager Chris Grier said Monday. Speaking to reporters alongside coach Mike McDaniel in his final press conference of the 2022 season, Grier explained that he was told the positive news by doctors after the quarterback was diagnosed with concussions on two separate occasions this year. Tagovailo…