Cons:
Maybe Manziel sorts his life out with the Cardinals, but it seems like no one has been able to find a way to communicate with Manziel. He probably does end up out of football during the offseason, and it seems very possible that he never finds work after his release from the Browns. Manziel has been sited for drunk and disordely to domestic violence (which is not acceptable in todays NFL). I don’t see the Cardinals taking a chance on Manziel because of the domestic violence, reason being the Ray Rice case. If the Cardinals refused to take Ray Rice when they desperatly needed a running back, no way they take a quarteback who refuses treatment.
Manziel was sited as a short quarterback who couldn’t make all the throws, and as a profesional who seemed very frustrating for a coach to work with. Hue Jackson must have a secret formula, because he made Andy Dalton a pro-bowler, and A.J. McCarron looked very impressive. If Hue Jackson has trouble with Manziel, what makes you think that Arians reaches him? Arians was able to reach out to Tyrann Mathieu, only because of the Honey Badgers eagerness to get his life on track. Manziel seems uninterested in anything other then his friends.
The feeling in Arizona is that the Cardinals need to bring on a quarterback to eventually replace Carson Palmer in the nearby future (see: https://raisingzona.com/2016/01/31/arizona-cardinals-the-quarterback-of-the-future/). For those who think that the Cardinals could have a low-risk high-reward factor on Manziel, think again. Manziel would taint the name and brand of football the Cardinals like to play. If the Cardinals do that, it’s hard to get rid of if Manziel were to get in trouble again. Sorry Cardinals fans, but even keeping Manziel past the off-season is risky and not worth it.