So his agent hasn't discussed deals with multiple clubs? Bullshit.
I honestly don't think it matters how the cup final goes. Sanchez seems like a cut throat competitor and the Arsenal board don't seem to have that mindset. I think he'll look to go to a club who will compete for domestic trophies as well as be contenders for CL, because he is getting up there in age and wants to ensure that he's competing at the highest level. His agent and Arsenal will probably demand a huge fee because it is probably the least that can be done for a player who has almost been a one-man show for a club that just don't do what is absolutely necessary to be one of Europe's best.