Manchester United legend Andy Cole is a big fan of the club's four-man strike-force.
"I certainly don't think the title will be decided by goal difference this season," Cole told the Mirror. "I think the boss tried to eliminate that straight away [by buying van Persie].
"Robin has made a massive impact since he joined. He's carried on for United where he left off with Arsenal last season, scoring bundles of goals.
"I think he's also joined at a good age. People might say it's not a good age, given he's 29 and United paid £24m for him, but I don't think he has anything to prove to anybody.
"Everyone knows what he can do and I think that makes the transition even easier for him, because he's already shown what he can do and the pressure's off.
"For me, Hernandez is also a key man. People tried to knock him last season, after his second season didn't go as well as his first, but I knew he'd get back to his best form.
"If he keeps on scoring, he virtually picks himself again, and that's a great problem for the manager, to have so many options up front in terms of strikers who are in form and scoring."