Sergio Aguero clawed one back and they were on the up, until one key moment. Booked earlier in the game for a foul on Ivan Rakitic, Manchester City defender Gael Clichy was beaten to the ball by Dani Alves. He clattered into the Brazilian and was giving his marching orders.
City's hopes of another goal seemed to die there and in the end they were lucky to get away without conceding a second, after Lionel Messi had a 90th minute talent transplant at The Etihad.
The red card seemed pretty straight forward. Both offences were worthy of a yellow card and the Frenchman unfortunately had to go.
But one player who disagrees is a current Manchester City outcast, Micah Richards. The misfit is currently on loan at Serie A side Fiorentina, who take on Tottenham this Thursday, and he clearly disagreed with the second yellow card offence - judging by this Tweet:
Was that a yellow??!!!— Micah Richards (@MicahRichards) February 24, 2015
Alves' amateur dramatics did not help matters but looking back Richards will certainly appreciate that Clichy had to walk.
He will now miss the second leg with Aleksandar Kolarov likely to replace him.