The striker has niggling shoulder and neck problems and is set to be rested for tomorrow's Carling Cup home clash with Wigan.
"Things take on a new dimension here. Against West Ham I was in incredible pain with my neck.
"It was impossible to turn my head. Every ball that's contested here I get ploughed into - and the referee doesn't blow for it.
"When people pushed me in France, I fell down and got a free kick. When there's a hard tackle here, I have to get up and play.
"After a Premier League match, I walk off with my body aching, with scratch marks, stiff muscles. Three days later, we go again."