He looks sloppy at times, but there's no denying his productivity in the final third. Considering he has Aguero in front of him, he'll continue to produce.
The problem of balance could arise if he and Silva occupy each other's space and they could be suspect in the middle if Yaya, Silva and De Bruyne are all playing. But they'll absolutely hammer most teams when they're flowing and that will most likely win you the League, even if they don't beat all the top teams. Having too many attacking midfielders is a problem when we have an erratic and one-paced Giroud up front. But with Aguero and Sterling buzzing around, they'll always have someone to provide for and it creates space for themselves too.
Which is another way of saying: Wenger
