You're Philo-ing again. Any fake news outlet can reach for a dubious source or just pull the old Chris Broussard "multiple sauces" routine without actually having any.
The AP's claim is just ridiculous on its face. If they weren't too blinded by anti-Trump zeal and leftist partisanship to do their job, they wouldn't have published it without irrefutable proof that Trump said it. But who needs journalistic ethics when you have an agenda to push? Thus, we have fake news like this story, the Supreme Court nominee's "fascist club," the MLK bust, etc.