They did win the youth cup, and they played the other oil rich club in the final, Man City, because they buy up all the best young talent and send them out on loan all over Europe.
So they are more than likely to get players that way than a club that can only afford to buy a few.
As for Sanchez being a big money buy, that of course is true, but it was our money, generated by our supporters, not buy a Russian billionaire.
The reason we have only got Sanchez and Ozil, and Chelsea buy squad players for 30m or more is because we only get money from our supporters.
You can defend them all you like, but despise everything about their club, and the way they, and clubs like them, have ruined football.