We have another reason to the addition of Kwon Alexander is invaluable.
When the San Francisco 49ers started 2017, they gave Reuben Foster the green dot, the communications with the sideline to relay all the plays to the defense. As time went on, the 49ers realized that Foster may not be the one they want to relay plays to and switched over to Fred Warner. Someone who, for all intents and purposes, will be the green dot going into 2019.
Well, Alexander has experience doing the exact same thing while he was with the Tampa Bay Buccaneers.