Better players have walked from their teams so it's definitely possible.
He has all the tools, but he seems to not play up to his abilities it seems for whatever reason. Essentially the type of guy who could dominate, but doesn't.
He also doesn't seem to have that connection with Luck like TY and Doyle did so quickly.
Hopefully Aiken being here maybe lights a fire and DM becomes the player we think he can be FULL TIME. If he's pedestrian or average this year, I can easily see us letting him walk.