If we do that it's likely to be a much better one than Welbeck though. I would be very surprised if Arsenal don't also go and spend big money on a much better striker than him at some point in the near future soon, too, if they have aspirations of winning big trophies, that is.
If you're talking about a club who wants to compete for the PL and CL (which, I assume, given the money we've spent and will likely continue to spend, is the plan), Welbeck isn't really the sort of striker you'd have on your team for 40 games a season (which is what he demanded), like you said above, someone like Rooney, a far superior player, is what you want.
As for this season, we didn't need him, but the problem is that Arsenal did, and that's the annoyance for me, we just shouldn't have sold him to them. I don't particularly give a bollock about the fact that he's an academy player and he should show respect or whatever.