Claudius also, I do think "is he/ is he not world class?" is a really facile argument.
Bottom line, we wouldn't swap Saka for anyone - anyone - in the Premier League. I doubt there's anyone out there in the world of football we would swap him for. If we were to sell him, all of the clubs we consider to be rivals, either domestically or in Europe, would be in for him. If we were to put him up for sale now (and why would we?), we would be talking, I think, £100m+ just to get Arsenal to the table.
It's funny to think that maybe 2 or 3 years ago, I used to worry what would happen if Arsenal Football Club didn't raise its level - Saka seemed nailed on to join a Liverpool or a City at some point. I don't see any chance of that now.