Olsen is the latest coach to hit out at Mourinho's negative tactics
The 'Special One' will be in the stands for Tuesday's Champions League battle against Barcelona at Camp Nou as his side try to overturn the 2-0 deficit sustained in the first-leg of the semi-final last week.
However, Olsen is expecting less than attractive football from Madrid, believing Mourinho will ensure his team stick to his defensive gameplan.
"I am not a big admirer of Mourinho, and I don't like his persona or the way he plays football negatively," he told Danish press agency Ritzau.
"But he has become famous by winning many things and behaving like this."
Earlier today, Ottmar Hitzfeld said Mourinho was arrogant, and has damaged the reputation of Real Madrid.