I think it depends how genuine the reports are that we've walked away. If that has been communicated to Sanchez's agents then it's over. If its media speculation,anything can happen, although united seem nailed on based on majority of reports in the last 24 hours.
With Jesus out and Aguero not looking as sharp as usual it does seem that we are lacking numbers in that area, especially with the amount of games we have. Agree as well with the concerns if anything were to happen to Fernandinho, he looked tired yesterday and we really don't have anyone to replace him if he were to get injured.
We clearly have an amazing squad that is performing incredibly well, but fatigue and injuries still happen. I just hope not bringing in a forward to share the burden with Aguero and Jesus (when fit) doesn't come back and bite us.