Whether we can or can't catch City really doesn't come into it for me. The difference between finishing 2nd and 3rd is negligible in my view.
There is a slightly bigger difference between 3rd and 4th, I accept - because one gives automatic CL qualification, and the other requires you to enter the final qualifying round. But even with that in mind, I'm really not fussed between 3rd and 4th either (though I might be in a couple of months time, should we find ourselves well clear of 5th).
Fundamentally the difference lies between finishing 4th and 5th. Only the differences between 1st and 2nd, and 17th and 18th, are bigger. So if you accept that Man City are going to finish in the top four - and this is surely a near certainty, and definitely something which the majority expect - then I really don't give a monkies about them and where they finish within the top four. It's all about ensuring that we're in the top four as well, for me. Whether that is above or below City, I really do not care.