Chelsea boss Guus Hiddink has admitted there's tension between Thibaut Courtois and goalkeeper coach Christophe Lollichon.
However, he insists the Belgian is happy to stay with the club.
Hiddink said: "They are working as a group, as goalies do, in their reduced area.
"They are different personalities but they do well, they work hard. The most important thing is that Courtois said he is very happy at Chelsea and will stay at the club.
"If [Chelsea media chief] Steve [Atkins] and I have a big dispute, we have to fight each other out of this hall. That's not what is going on - they are happy here."