Be easier for you to be in a bar and chat to Hakim after a few drinks (you can even order a soft drink when he thinks it's alcohol) and then steer the conversation to your wife and compliment her. If he then in turn does the same, then ease into the conversation on the fact that you think it is hot that he thinks she is hot. Depending on his reaction at this point, then 'pretend' that you've had a few too much and then drop the comment that you'd like to see her with another guy. Don't necessarily bring up the fact about seeing her fuck someone, just say 'with someone else'. It's a good way of saying there was a misunderstanding if it gos South.
I did this with a workmate to gauge his interest in him chasing up my wife. It got to the point that I'd always let him know when we had fucked and he'd be like, wow! your wife likes it a lot. It then progressed to me showing him photos that I had taken of her one night in bed (after a night out drinking with friends) whilst we were having sex. Showed him the photos on my digital camera and he loved them. Sure he went off to the toilets for a wank 🙂.
They never ever hooked up as far as I know but she knows that he had seen the photos of her and she said as long as it was only ever him.
Sharing a photo here so you can see what she looks like. It's from a few years ago but she's still sexy as fuck and has an open mind.