Spurs defeated City in the first-leg of their Champions League quarterfinal this week.
“I think the way City spends, I would say it was a lot of money," he said.
“But they spend it in a responsible way. They attract good players, young players and they cost a lot of money.
“But I think we have got a very very good team with an unbelievable mentality. We all want to fight for each other, I hope it's going to stay like this in the coming years."