Sanchez to be fair I'm a bit ambivalent about. I'm annoyed we are trying to get him now instead of when I suggested it back during the FFP squeeze. :( So I'm a bit annoyed at the love he is getting now, when most thought I was dumb to want to improve on the best attack 3 years ago.
That said, unless Aguero's current performance since the GJ injury has convinced Pep he is better with both Aguero and GJ starting together, I think Aguero will peace out.
There is no way a 30 goals a season top striker in the history of the prem is going to be rotating starts at 28. I mean folks who think that will happen are in fantasy land.
Either Pep finds a way to start both or Aguero is going to leave. Based on how GJ played early on, I believe Pep will start him next season unless something major disrupts his progression.
So knowing that, the only way Aguero stays is if he starts both of them. I have a way that works by the way. With Sane and Sterling at Wing back and we can even have Sanchez if we get him or Debryune if we don't and GJ flanking Aguero in a 343 system. Or a 352 system with Debryune and Silva playing their normal roles.
Their are workable permutations. But don't be fooled, that's the only way I see Aguero staying. He will not stay as a rotation guy. That simply will not happen.