The problem will be his intent.
On the face of it, he probably did have sex with her.
Did he know she’d been pressured to do so? That would be hard (not impossible) to prove. In the UK, he had sex with a 17 year old who was seemingly willing to do so. He’s probably that presumptuous and arrogant that it wouldn’t have seemed ‘off’ to him.
Unless I’ve missed it, Virginia Giuffre has not indicated she had sex with him unwillingly, more that she had been pressurised to do so by Epstein and Maxwell.
Morally, he’s disgusting and entitled - she was 17. Not least because he possibly slept with a girl not a million miles away from the age of his own daughters. I think it’s awful when men/women in their 40s sleep with teenagers. I’m sure there is the odd exception but it’s mostly just weird/exploitative. I don’t have any friends (all in our 40s) who wouldn’t think it was anything but really creepy.
His biggest problem will be endless civil cases, public humiliation, what his daughters think of him.
Unless there is some dynamite evidence then I think he’s highly unlikely to be charged with anything. He is just a vile, disgusting man.