Mourinho refused to put a timeframe on when Terry should retire.
"At John's age players can reach a level of stability when they remain the same - 33, 34, 35, 36," he said.
"I look at (Inter Milan full-back) Javier Zanetti in 2008 and in 2012 and he's the same. Other guys are not the same from one season to the next for some reason.
"Players have to enjoy themselves and play with the same ambition. They have to enjoy the moment and not be worried about one more or one less pound in their contract."
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