We waited a year to replace Kompany, because the oprions that summer were dire or insane prices. Then we nailed it. Imagine we spent 80m on Maguire, and then had to buy a proper defender again in a year or twonat a huge cost again. Or koulibaly the following year.
It would be a mistake not getting a replacement for Aguero. But nowhere near as big a mistake as not getting the right player in. Specially at the insane prices we are talking about, it Has to be right. Get a cheap alternative in if you have to wait, give torres and gabi a go, but if spending big money, get it right.
And I'm sorry for not agreeing, but for me Kane isn't the right signing. Not saying he is not good, but rather he is not right. Will totally welcome if he comes, won't be disappointed if we get nobody though.
Your mention of van persie is appropriate. Short term fix, thay won them that one title, their last in almost a decade. Also, cost a good 100m less than what Kane would.