Karanka worked as Chelsea manager Mourinho's No2 at Real.
He told Marca: "No. What José did was try to do the best thing at any given time. Everyone talks, for example, about the thing with Iker [Casillas].
"It wasn't a decision that was taken overnight. We took our time and decided that it was the best thing for the team at that moment."
Karanka added: "They talked about Özil, and when Özil played against him, he gave him his shirt. The majority of players speak well of José in interviews."
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