Brendan Rodgers’ side head into Saturday’s Premier League showdown with Chelsea at Anfield seventh in the table, having picked up just 14 points from their opening 10 games.
The Reds have struggled to cope with the loss of Luis Suarez to Barcelona over the summer, as well as Daniel Sturridge’s lengthy spell on the sidelines.
And Mourinho insists that he has not been surprised to see Liverpool struggle this season.
“Obviously [Suarez is] a very good player and when you lose a good player you lose something,” said Mourinho.
“But they had fantastic funds to invest in a new squad. They improve it a lot, they bought so many important players, all of them internationals. So they invested very good and I think their potential is there.
“In the Premier League, I am not surprised with anything. Every match is difficult, you don’t know when people are going to lose points. After the World Cup is difficult, you don’t have time to have a proper pre-season.”
Mourinho continued: “I think Liverpool have to think about this season. I think they have enough motivation.
“I think if I was in that position I would go back to last season for the good memories, all the great matches they played.”
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