There has been a lot of talk this off season of needed new linebackers and better linebacker play. Many fans and experts have not been very high on Kiko Alonso, and McMillan is coming off of an knee injury. Even with those two coming back and having good seasons, there is still a wide open spot at the other linebacker position.
The Dolphins did draft Jerome Baker out of Ohio State to play opposite of Kiko Alonso in the third round, but he may not be the starter at that position.
Anthony was a former first round pick for the Saints and was very productive his rookie year. He lead the team in tackles in 2015 with 112 tackles, but was switched to outside linebacker the next season, and his production took a dive. He appeared in 10 games and only started three games in 2016, while learning a new position and becoming a role player.
Anthony was learning a new role in Miami last season, and trying to find his niche. Towards the end of the season, Anthony showed flashes what he offers the Dolphins on defense.
Anthony posses athletic ability that Miami has been lacking, and I fully expect him to be used in nickel situations.