I've never rated him as highly as most. Obviously he's not as poor as he's looked here (though that has been a far sight worse than some of the other 'underperforming' strikers people are mentioning in mitigation, like Kane for example) but it is a valid addition to the catalogue of evidence that you can't rely on the numbers from his PSG career. His stats in general are potentially misleading, given that he's pretty much only ever joined the top side in any league, often at times of particular dominance.
LVG sold Van Persie because he didn't have the legs to do any running any more and relied on everyone else to make up for him in terms of work rate, movement, dynamism etc. Every time the ball came to him he was killing all pace and momentum in the attack. Ibrahimovic would be the same, except that he also comes as a potentially destructive ego and giant one-man circus. If we sign him it will confirm everything I fear about Mourinho as boss.
If we want to sign a striker, fine. There are quite a few out there at the moment with a range of age, quality, potential and experience. For a club with our sort of financial muscle, lots of them are comfortable targets. We should be looking at someone fast, dynamic, young, coachable, with room to develop and plenty of seasons of football ahead of him.