A decent PL striker is all he'll be - he's 22 in a few months so not a kid any longer, by that age Aguero, Rooney, Balo, Messi, Ronaldo were identified as potential world class talents - he may be a late developer but he is leaving it late........
Watching him he looks more like the sort of striker that should be playing at West Brom, Sunderland, Villa - he's not a patch on Rooney, Tevez, Ronaldo, Van Horseface, Cole etc which is the sort of strikers you associate with the rags.
Welbeck sat on the bench isn't the sort of player to raise fear in another team if they sub him on.