That's obviously your opinion. I, along with several others, disagree on that matter. Willian has no end product which is clear for anyone to see (today was another prime example of that). All English clubs are quoted stupid prices for players due to all the money that's in the league, and it's something we have to get on with whilst no talent is coming through our academy.
I can't keep second guessing the club intentions going forward, but we aren't going to spend £60-80m on any players IMO unless someone of a similar value is outgoing e.g. Costa-Morata. Only a few players are realistically obtainable this month with Mahrez being the only one with Prem experience whilst the names mentioned above don't fit that build. Fekir would cost at least £60m along with the fact he's best suited as an AM and Malcolm & Pulisic are potentially long term improvements. Just look how that's worked out in the past.
It's Mahrez or bust right now
Edit: Looks like it's bust