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Welbeck, Rooney and Hernandez watch from the bench vs. Fulham.
Often described as a "good" problem, depth is an extremely valuable asset over the course of the season.
It gives managers bundles of flexibility, allowing them to seamlessly craft lineups around player form and recent injuries.
However, that depth must be managed meticulously, as limited playing time for a certain player can make them feel unappreciated, lower their morale and ultimately end up with them requesting a transfer.
Aside from the EPL's second-leading scorer Robin van Persie, none of the other forwards on Manchester United have made a significant case to be a surefire starter.
Danny Welbeck has been maddeningly inconsistent, sometimes failing to get involved at all and other times producing moments like this.
Javier Hernandez has been a super sub—eight goals but nothing more—as he's failed to produce consistently as a starter in league play.
Lastly, Wayne Rooney hasn't been scoring as much, instead embracing his playmaker role, with nine assists thus far. However, Rooney still has 12 goals—a respectable total—and if anyone on this slide deserves a permanent spot in the lineup, it's him.
With such an abundance of forwards, Sir Alex Ferguson puts his team in a position to win, but risks losing one if he does not keep their playing times at an equilibrium.