He doesn't need to do that as he's still young this is the problem with our fanbase. They expect the likes of Ross and Rom to be consistently good and it's not the case with youngsters.
Don't know how old some posters are but you can't use Rooney as a benchmark as he was a rare case of having it all at a young age.
Gerrard was inconsistent at 21 as was Lampard, Scholes, bale, Drogba, RVP etc.
Only 5 players of recent times that have looked world class at a young age are Rooney, messi, ronaldo, and to an extent aguero and torres when they were 22-24.
Ironic that Rooney and torres have peaked young