There are reports today of Chelsea's ever-expanding squad already falling out with Roman and Ranieri! Chelsea's record signing Damien Duff is unhappy that manager Claudio Ranieri keeps substituting him towards the end of matches. Duff, at £17m the most expensive arrival during the Blues' summer revolution, has been substituted in all five of his matches since moving from Blackburn. But while he has expressed his dissatisfaction, boss Ranieri has told his star-studded squad to stop complaining - or else leave the club. Duff, who has been deployed on both the right and left flanks and in a central role behind the main striker. said: "I am settling in fine but in one of the games soon I'd like to get a full 90 minutes. "I was gutted to come off after 70 minutes on Saturday against Spurs. It seems like it happens every game. "I didn't like being substituted at half-time in our previous match against Blackburn. But the gaffer likes to make a change, so what can you do? "I won't let it get me down but it doesn't help playing in different positions." Duff was speaking prior to Chelsea's opening Champions League match against Sparta Prague on Tuesday. While Joe Cole revelaled today that as soon as they bought him Roman tried to loan him out for a year to Spartak Moscow! He turned down the move swiftly- whilst revealing that he wont be happy starting on the subs bench all season! But Ranieri said: "Unhappy players can damage the atmosphere - the players know what can happen if the atmosphere is not good. "I have spoken to all the players and they accept this. This is a new era for Chelsea. "Those who understand this rest with us. But if they don't understand this, I am sorry. If anyone is not happy with us, then they will be out."