Just a few thoughts after reading this thread:
Would be great to have Sanchez but if doesn't happen we can go for someone else
Aguero should not be at risk if we do sign Sanchez, he is a winger not a center forward
It's clear Arsenal and Wenger live in a constant state of delusion, why would you think a player that wants to leave and is not allowed to would play his best to help the very club is preventing him to move on? In fact, would any top player consider signing for a club that won't let you leave if you want to? Clearly not the best ad campaign for a team that has not win the premiership for over 10 years.
I doubt the Arsenal board would prefer to keep the player instead of taking the money, in any case, we should not drag this on forever, if we can't wrap this up soon we should move on to a different target.