Against Marseille a week-last-Wednesday, Dimitar Berbatov didnâ€™t even get off the bench as Fergie preferred Rooney and Hernandez up front.
And Macari told the Daily Star Sunday: â€śThe front two is the managerâ€™s decision.
â€śWhichever pairing he plays up front, youâ€™ve got to go with that. Itâ€™s Rooney at this moment in time with Little Pea.
â€śAntonio Valencia is back and he will provide plenty of balls into the box for them. When Berbatov gets his chance heâ€™s going to have to take it. I guess itâ€™s a nice problem for the manager to have.â€ť
Macari, a United player from 1973 to 1984, is also sure United will pip Arsenal to the title.
He added: â€śI do think they will win the league.
â€śTheyâ€™ve done it before and know how to win when the chips are down.â€ť