Garnacho to Chelsea is awesome for Chelsea. No idea why United let him go, like what went wrong with them, but they should have convinced him to stay. Looking at how terrible United is at the moment, it's clear that they are not going to end up with anyone better, so losing Garnacho will make them worse.
Cunha could probably be better if he starts to play decently, but that's about it. In any case, Chelsea will be in love with him, and sing him up properly, he is a great player and can get them a lot of help on left wing. Napoli really wanted him, and United was willing, only reason why Napoli didn't get him was because Garnacho wanted to stay in England as a nation and not move to another country, otherwise Napoli deal could have been awesome too.
Garnacho only wants Chelsea, but I don’t think Chelsea is the best place for him. He doesn’t have the qualities to bench any of the new Chelsea wingers, be it Joe Pedro, Pedro Neto, or Estevao; therefore, he is just going there because he wanted Chelsea and not for a better move because he can’t do better than any of these listed wingers and can’t bench them. He could have joined Napoli or Bayern Munich, where he would have had enough playing time, but since he decided to stay with the Blues, I wish him the best of luck.
Following Delap’s injury, Chelsea are still willing to keep Nickolas Jackson, they have informed Bayern Munich that Jackson will not more be available for loan again. This is really serious; Chelsea don’t want to risk staying very long without a reliable striker.