We don't know why Vidal is going. Could be a number of reasons, one being that he asked to leave, which really leaves us with no choice. Then there are other reasons that include his off the field behavior. We don't know what he's like away from the pitch. Maybe Marotta does and this latest incident was just the final nail.
No one on this board would have sold him in his peak form, even for 100M. So we have to stop with that theory. If last year was the start of Vidal's decline then we have to sell now. It looked like his athleticism returned as his knee got better but his offence was still nowhere to be found, that must be said. Vidal without the offence is a very different player.
If Vidal didn't ask to leave and his character off the field is better than it seems, and it turns out that we sold him on our own accord, it's a big gamble - I agree.
But no one is going to pay 60M for him with the injury, his offence nowhere to be found, and his drinking and driving. Yes, we did not get as much for him as we could have gotten at his peak (when no one in their right mind would sell) but in a year it's ALSO possible that we could be left with a damaged player worth nothing.
Ultimately you have to see who replaces Vidal and how the TEAM functions in the upcoming season without him. If you add a #10, move Asamoah to CM and buy a good young LB, it's possible our team does not miss Vidal. This is the ultimate wait and see scenario for me.