Eriksen's current Spurs contract expires next June.
While he is widely believed to have requested to leave the club last summer, Tottenham did not receive a suitable offer to sell their playmaker.
Tottenham look likely to try to cash in on Eriksen next month, but Mourinho was staying tight-lipped o Eriksen's wishes.
“I only know his contract ends at the end of the season and the conversations I have had with Christian are private conversations that I am not going to share," said Mourinho.
“We have a very good relationship that started on day one. I am not going to betray that trust and relationship."