Mourinho took on Wenger during his two spells as Chelsea boss and his stint as Manchester United manager, often succeeding against the Frenchman.
There was even a physical altercation in 2014 when Wenger shoved Mourinho on the touchline as Chelsea went on to beat the Gunners 2-0.
However, this all appears to be in the past for the Portuguese who thinks very highly of his old adversary.
‘The easiest way to remember Arsene Wenger is to say that he was the only kind,’ Mourinho told beIN Sports.
‘In today’s football, it is impossible for a manager to coach for 10, 15, or 20 years at the same club. He is the last one who accomplished that.
‘I really don’t think that we will ever see another manager remaining more than 10 years in a single club.
‘In today’s world, players come and go, the pressure is immense for the manager. You make a great season but the next one is always a little worse.
‘There is enormous pressure, there is a tendency to always change.
‘Today’s norms dictate that the managers cannot stay at the same club for a long time.
If we are talking about football, Wenger is the manager who coached the ‘Invincibles’. He won the Premier League with Arsenal without losing a single match and that remains through time.’
Mourinho is expected to make a return to management this summer, saying: ‘I want to train a club, I want to find a place for this summer, in June for the preseason.
‘I know exactly what I do not want, that’s why I’ve already rejected three or four offers.
‘And I know what I want, not the name of the club, but the work style, workload. I know what I want and that’s what I hope for.’