I'm not convinced Rooney is good enough as the main #9 and while we are still playing Young and using Mata as a wide man I don't think that attack has nearly enough goal threat and creativity in it to win the PL. Memphis will have a good debut season I suspect but we have to give him time as well, he's young and this is a very different league.
It's not like we are playing the top 4 every week. We should have more than enough versus the Stokes of this world. Plus I have faith in LVG against the top teams. I'd imagine we won't be far away.