I think if he was waiting for us to make some world class signings last season and to see if we could seriously challenger for the PL and CL, and nothing he has seen this season will have changed his mind.
Since he arrived here we haven't bought any world class players that he could play alongside, and at his age and the fact he is at his peak, he probably has realised, like everyone else, that Wenger isn't going to.
From the clubs point of view, they realise that it would be a PR disaster if we couldn't keep him or Ozi,l and that to replace him would be far more expensive than giving him 250k a week.
Sanchez is just another top quality player who has realised we are a club happy to drift around aimlessly in fourth place with a manager and board content to make a massive profit every season, with very little investment in the sort of players that Sanchez and supporters deserve.
Most people in business, and sport, learn from their mistakes.
Wenger and the board don't.
That is why they have no one to blame but themselves, and their indecisiveness and tight fisted approach has proved to be a false economy.
For Wenger it will be seen as an admission of defeat.
For Kroenke, he couldn't care less.
For the supporters, we lose our best player, and also know that he won't be adequately replaced, but we have seen it all before.
The difference is, we have to watch spurs, Chelsea, Man U, Liverpool, Man City and possibly Everton overtake us.
All we have done is overtake Leicester, and even they could still qualify for the CL.
Another wasted season thanks to Wenger and Kroenke.