United have a front line to frighten even the toughest of defences and whilst this may work out well for them, it could turn out to be a bit of an issue for Van Persie.
Should he fail to find his shooting boots, Van Gaal will have no problem replacing him and either opting for just Falcao up top and keeping Rooney as a number ten or using both Rooney and Falcao, bringing Mata back into the side.
Really the options for Van Gaal are endless.