It seems "quicker" for everyone else because we're not looking at those deals as closely as we do our own.
Who's to say Liverpool weren't looking at Nunez for weeks if not months before us?
Liverpool still haven't actually signed Nunez yet and I know it's only a matter of time, but for all the speed that they get praised for, it's gone rather quiet.
There is a difference though, Liverpool already have a great team/squad that only needs a slight upgrade. So not much rush there, no need to panic, they will be challenging next season no matter how the transfer window goes.
We just had our worst ever PL season, some of the players clearly not up to standards. So the squad needs a big turn-over and with a new manager, who has a unique playing style, you need things done quickly to give them time to settle in. We don't have the luxury of integrating players during the season, like City or Liverpool can afford to. The current United team is not good enough, you need the new players to come in and kick on right away.
Also, feels like fans always moan about others moaning about slow transfers. Look how it turns out for us, last season a great example.
I'm not paninicing, but if nothing happens within the next 2 weeks then it's not a good sign.