I don't think JT struggled anywhere near as much as Cahill did, watch the game again and you'll see that Aguero deliberately picks on Cahill for the majority of his chances. Cahill doesn't have the intelligence to defend well in another way but JT does. All we have to do is surround JT with pace. I.e. Last season - if we play Luis - JT - Zouma - Azpi, we'd be able to defend much more proactively. It's our manager that's at fault for preferring to defend in this style tbh, we've had the players to play more proactively but he refuses to do it.