The former Spartak Moscow marksman has insisted he would be off if he does not get more game time.
Redknapp said: "It is difficult because Crouch, Defoe, Keane, they're all playing well. And Roman had an injury. I do understand where he is coming from. He works hard, is a fantastic player but I can't do anything about it.
"It's been hard leaving Crouchy out, let alone getting Pav in the team. He's got a massive game for Russia. Language isn't an issue, he's a good lad, a smashing person."