Spurs meet the Croatian giants in the round of 16 after yesterday's draw.
Mourinho said, "I played against them with Real Madrid in the Champions League. Croatian football is Croatian football, there is a lot of talent. It's a football country.
"A good stadium where I think we will play well. It is not a cumbersome flight that is not that far.
"I am positive about most things, but the most important thing is that we advance to the quarterfinals."