'We need to invest' doesn't equal 'just pay large sums of money for any player' in my dictionary. And you're second sentence, why would prefer overpaying for players that haven't proven anything yet at PL levels and don't even show remarkable statistics in the Eredivisie? I just don't get that type of reasoning. For some here the nearing deadline of the transfer window brings an inexplicable 'just buy something at any price' mentality. I just don't believe in that nonsense.
Because I trust the process. I trust ETH and... we actually have money to spend.
If we have previously been able to spend a billion and achieving only 2nd place in the league and reaching EL final, then I am certain another billion (wisely spent) brings us more than the last billion invested.
The difference is that we are buying players who make the team and blend in the system, the system which has the potential to be as good as Pep's or Klopp's system. And again, it's not our money so don't worry. And we all want to see only these buys which would be amazing bargains (Ronaldo from Sporting, Vidic, Evra, Carrick etc) but this window we cannot. We lack the structure, no DOF and stupid, disinterested owners who want to sell.
When we have the structure, the DOF and passionate owners, then we can talk about this topic once again. Then we can plan further ahead because there are competent people in charge and we have things set. Currently we don't have so I'd rather see quick investments/buys (whatever term you see fit) than be disappointed to see us paying for specific players the money.
Is Antony worth 80 mil? No.
Was Martinez worth 45 mil? No.
But... are they very necessary pieces of puzzle in ETH system and will help us speed up the transition under a new coach, implementing new processes faster and smoother? Yes.
Are they players who, if can adapt, play for United for 5-6 years and even more? Yes.
United has done things wrong since 2006, now they are doing things wrong but moving in the right direction. Soon we will get things right and moving even quicker in the right direction. So I'd recommend you relax more and focus on placing your energy where it brings the most value to you and others. Just keep your head up, protest against the owners and take one for the team and give a helping hand for making the painful change.