Chelsea boss Luiz Felipe Scolari has concerns his players' minders are affecting morale.

The Telegraph says Scolari is becoming concerned that associates of players at Chelsea could undermine the club's unity by leaking stories.

The Chelsea manager is known to feel extremely strongly about the importance of keeping all dressing-room or team discussions in-house and has been frustrated by some reports that have appeared in the media following the club's disappointing recent run.

Scolari is adamant that the spirit at Chelsea is strong, but pointedly remarked that "sometimes the walls have ears" at his press conference on Friday. Chelsea, who face Manchester United at Old Trafford on Sunday, believe that there are people from outside the club who have been agitating.

Last year Chelsea experienced similar a problem under Avram Grant, who instructed the media not to listen to agents "too much", following the Carling Cup final defeat against Tottenham.

Prior to the match, captain John Terry and first-team coach Henk ten Cate had a training-ground row that quickly became public knowledge.