My conclusion is it would be brilliant if we signed him but the priority should be to get our full backs sorted. If Sanchez stays at arsenal for 1 more year we should be able to pick him up for free next summer.
I doubt City would want to take the risk of hoping he chooses us next season.
He loves London life apparently so there would be nothing stopping Chelsea getting him.
I also would not be taking this potential transfer ban lightly. Anything can happen in sport and even with FIFA and The FA on our side, it would be very naive to think we are just going to automatically win this case.
With that in mind I would be buying what I could this summer.