You can't teach that kind of an eye for goal. Playing together with an aging Messi can be a disaster in more important games, however. I think this is exactly what will happen: our attack is so shite Aguero walks into the starting 11.
I'm honestly far less negative than others here and reasonably excited to see one of the best strikers of his generation play at Barca, even if half-finished and only for a year (?). Could easily have a Cavani-like impact here, and we need a pure goalscorer.