I think United need to accept where they are now and start rebuilding with top 4 in mind, rather than trying to go out and sign players at the top end of the market.
One of the biggest issues however is the "united tax" - Look at Mount / Antony / McGuire etc - All player that United wanted but paid WAY over the odds for....
United will always be subject to over paying for players as it's deemed they have the money to spend......