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These are two of the most naturally gifted finishers Sir Alex has ever managed.
Javier Hernadez (Chicharito) was a breath of fresh air when he was signed out of nowhere two years ago. The whole of English football was buzzing about him by the end of his first season.
Unfortunately, due mainly to injuries, he seemed to suffer from "second-season syndrome" last year. He made 22 starts and 14 substitute appearances for 12 goals, compared to 20 from 27 and 18 the season before.
The number of offsides against him may have been an indication of his desperation to shine, or it might be that the opposition had sussed out the "kick and rush" strategy to break high defences.
Whatever the case, with him missing the Olympics, we can expect him back fully fit and determined to nail down the third striker role.
Unless United sign Lewandowski or one of the other strikers bandied around, there is definitely a chance for Federicho Macheda to secure one of the four striking roles that Sir Alex has said are necessary ever since the days of Yorke and Cole, Sheringham and Solskjaer.
It seems certain that Will Keane would have been in pole position for fourth striker but for his serious knee injury. Macheda has been described by Sir Alex as "an exceptional talent" (via The Independent):
He is one we have to keep a foot on. He has got a cocky arrogance about him. He will argue with players in a training session and he will compete for his ego. But he's only 18, he's not 19 until October and we keep forgetting that.
He is an exceptional talent and he is tough. He does not get bullied in games. He gives as good as he gets. Cesare Prandelli [the new Italian coach] has spoken to our staff about him so he is aware of his ability.
He became an instant folk hero when he scored the winner against Aston Villa three years ago that won United the title.
This is a big season for him, starting on Wednesday. With Berbatov probably in the shop window, this could be Macheda's chance to prove he should not go out on loan again.