I laughed at something in the BBC gossip column the other day about him. It said something like "chelsea fear that costa has got too fat over the summer to sell" Got him rocking up to training in a poncho like Homer Simpson.
It hasnt. If you are behind the ball you can't be offside. People are assuming that playing it backwards implies you were behind the ball. It's likely that that is true but you can run from an offside position to play a ball that has gone backwards and still be offside.