If it was actually for a contract I quest it was worth going for, but not informing the club is the wrong side of it. Messi is loved by many and I'm not happy about his attitude towards the PSG team. He is making his desire to exit the club too obvious and that is seemingly unprofessional.
The contract is a good one, everyone will love to bid but it wouldn't have called for noise if he had proper arrangements. as the new has it, I will say Messi went for the Ambassador contract, as for him joining Arab league I can't tell till it happens.
Well, if we are honest here, it doesn't really matter what Messi does in the months before the transfer window opens. Let's assume he goes on a vacation to China for a week, I tell you that the media will report he is going to leave PSG for a Chinese club. From that point of view it doesn't matter. True that this was obviously bringing lots of media attention to it in Saudi Arabia, but as he said he scheduled this trip before and was forced to cancel it. I don't know the circumstances of the first time, but it is not like he went there for a couple of days. I can imagine that there are political tensions involved as well between the PSG boss and Saudi Arabia in general. Perhaps nobody would have said a word if Messi spent a day in Prague. In how far it is true that he didn't inform them is hard to tell. I suppose we know almost nothing about what really happened. It would become interesting once again when he really transfers to Saudi Arabia.
Of course, what Messi did is debatable. But despite all this, I don't think Messi will be transferred to Saudi Arabia. He will not say goodbye to football without playing in Barcelona for 1 year. Maybe he will go to Saudi Arabia after Barcelona. I think this would be a better decision. He can still play high-level football.
Messi apologized after his mistake, but I think the ties with PSG have already been broken. PSG will not come to Messi with a new offer. Messi wants success in the champions league and he can do it with Barcelona. PSG is unlucky in the champions league.