What do we need with another centre half? We could get rid of one now and be fine for cover there. Centre half is the last position we should buy for, actually.
We thought Shevchenko would be an amazing signing too. But I do agree Villa is our best bet for a top forward. Benzema, as others have mentioned, would also be an excellent option, as would Aguero, but they will both cost extortionate amounts of money.
I agree with all of this.
So what if he's 30? There's nothing to say he can't still be quality at 30 years of age. 4 or so years is plenty of time to justify signing someone.
I would welcome Tevez, definitely. I reckon one centre-back might be off as well as those you mention.