I actually agree with Woof, Sanchez is a great player but players like that are more trouble than they are worth, first him and Ozil want a massive pay rise now all this carry on? There are plenty of other good players out there (Isco, Lacazette, Douglas Costa, Van Dijk, Pulisic etc), if I was Arsenal I'd sell the pair of them and reinvest the money in the team.
We'd have a better starting 11 and squad than they do if they lose Wenger, Ozil & Sanchez. None of the players you mentioned are world class although Douglas Costa is on the verge. I dont see the problem in a player asking for higher wages if they deserve it, and he certainly does. People talk about his mentality and how he is off the pitch but in all honesty, who gives a fck ? He's fantastic on the pitch and drives everyone around him to become better. Besides being a great player, he has fantastic leadership, determination, and you can add experience and a winning mentality to that. You talk about one intangible that could prove to be a risk but I'll point to 10 others that make him a no-brainer for most clubs.
Besides, this whole lack of commitment thing people like to throw out, where does it come from and why is it an issue ? If Real Madrid try to sign the 15 players in our first team, at least 10 of them would want the transfer. In most cases, they dont owe the club any more than the club owes them. Half of them would be asked to consider the deal by the club if the money was right. If you're referring to his commitment in terms of his on the pitch displays, I've never seen him give anything less than 100%. Even coming off the bench against us, he looked their best player and one who was up for it the most. Taking umbrage to him smiling on the bench with his side being down and using it as the only argument ? give me a break.
Big players have big characters and we need a few in our side if you ask me.