If he is a decent guy who you think would be good for your friend but not for you then go for it. My wife set her best friend up with a guy she had dated for a short time, they have now been married more than 20 years.
On a similar note I once got a job at a company because a friend of mine interviewed there, decided he wasn’t interested but knew that I would be, so he gave them my name, and they called me.