Chelsea boss Jose Mourinho remains keen to keep hold of Petr Cech.
Mourinho is expected to recall Courtois to Champions League duty for the game against Schalke, having played Petr Cech in both games against Maribor.
Mourinho said: "I am a privileged coach to have two keepers of this dimension. The problem is when you don't have one good.
"I have two."
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