Inter Milan striker Goran Pandev is unsure how they will handle CSKA Moscow's plastic pitch.
Inter go into their Champions League quarterfinal second-leg defending a 1-0 lead.
It's the first time that I've trained on a synthetic pitch but I have played on one with Macedonia before," said Pandev.
"It will not be easy to play on a pitch like that. The ball goes faster and bounces less."