Ince says Tottenham are rightly being discussed as potential title winners.
However, he says Mourinho cannot afford his players to make wrong decisions like Lo Celso did on a regular basis.
"Even though it's only the early part of the season, everyone's talking about Tottenham now," Ince told Premier League Productions.
"So these teams like Tottenham, Chelsea, this is a rare season where they actually feel they've got a chance of winning it.
"To put that belief into the players so early in the season is what Mourinho is brilliant at.
"He's a motivator, you can see the way they're playing, the way they're fighting for each other and doing the right things.