Following Manchester United’s late 2-2 draw with Burnley on Tuesday, Mourinho bemoaned the lack of spending on his team, comparing it unfavourably to Manchester City.
Mourinho said: “[Spending £300m] is not enough. We are in the second year of trying to rebuild a football team that you know is not one of the best teams in the world.
“Manchester City buy full-backs for the price of strikers.”
Mourinho’s complaints about investment come despite spending around £286m since joining United in 2016.
But Yorke has dismissed Mourinho’s comments, insisting he has the players to compete.
And the ex-Man Utd striker has pinpointed his former side’s display against Liverpool as the turning point in their season.
Yorke told beINSports: “United came into this season with high expectations.
“You look at Jose, in his second season, he’s always gone on to win the league. He’s always been able to produce a winning team.
“On the back of last season, he’s gone out and spent some serious money.
“And if you stand there and say United aren’t a big club in a sense of not being able to spend the kind of money like other club.
“He’s saying United aren’t a big team but we are a big team.
“When you have people like Matic, Pogba, Lukaku, Martial, you’ve got proper players there.
“[The way United were] at the start of the season, they should have gone on.
“They’ve missed their chances against big teams like Liverpool, to really stamp their authority.”