Good news. My main issues with Mourinho is how he tends to play when we play against a big team, goes too negative and I don't think he believes in his team to be able to outplay them the way liverpool did. But getting Sanchez I think changes that. Changes everything about us in big games IMO. He can set us up to be solid but also have a brilliant counter attacking option through him first and then martial/pogba/lukaku and whoever else as well now. I didn't see us getting like Sanchez before and that type is vital to Mourinho, so while I always wanted him to stay, it was a bit of a pessimistic look on the near future as we just had to hope our current players would develop and for slow improvement rather then expecting a rapid change.
Now if we follow this and Sanchez with a De Gea renewal, then the near future is looking brilliant for us. Hopefully we tie down Martial for the long term as well, since his contract expires summer 2019. Actually looking at it, in the next 18 months we have Ibra, Carrick, young, fellaini, shaw, blind, valencia, mata, darmian, de gea, rojo, herrera, smalling, jones and martial all expiring (first 5 this summer, the rest 2019 according to transfermarkt). Got some renewals to do for Ed in the near future. Though I'd expect 5 of those to be gone by this summer anyway.