By played a key part, you mean he was at fault for their goal? Hence why he was crying after the game as we nicked it and he said "I was so worried I'd lost it for us, thankfully Andy scored, he is worth the £35million for that alone" or something to that effect.
Carra is an LFC hero and I'm happy to see him in cup games and when we really need him. But our best centre backs are fit, he would never ever, ever make a good right back, and even if he did, we have players in front of him.
So, in short, shut up. Wind up merchant.