Arsenal hero Martin Keown questioned Manchester City boss Pep Guardiola's axing of Sergio Aguero for defeat at Barcelona.
Keown wrote in the Daily Mail: "Pep Guardiola's decision to leave out Sergio Aguero was very strange because he has been Manchester City's Lionel Messi in recent years.
"He's their star man — scoring 50 league goals in the past two seasons — and I can't imagine Guardiola would have ever have left Messi out of such a big game.
"It looks like he has been too clever for his own good here.
"He's still in the process of building relationships with his players, so it was a risky move anyway, but bringing Aguero on in the 79th minute with the game already gone would have been almost embarrassing for the striker."