It would have just been better to keep Costa on for the Swansea game. He'd have got his hat trick, and then played Remy yesterday, with Costa on for the last 15 if the game wasn't going our way. Instead, there was no spark at all yesterday and everyone looked tired. Why JM left it to the last minute for one sub, I cannot fathom. Regardless, I wouldn't blame Costa for yesterday's dismal display.