How do I sell a very specific domain name to a certain person?

Hello all, I have come into the ownership of a very specific domain name relating back to a YouTuber/Twitch streamer of a fairly larger size (Almost 1 Million Subs on YouTube and 650k twitch followers (500k USD from twitch subs alone according to the database leak from awhile ago!)). The domain is literally his username due the fact that the last two letters of his username is a TLD. Anyway how would you recommend I monetize this domain? Thanks for the help in advance.

Maybe contact him directly through his social channels? Make a nice pitch about how this would help him gain an even bigger following and hope for the best.

Don't be blatant with a dollar value when you approach them. People hate that.

Don't go for "Hey Streamio, I own stream.io - wanna buy? That'll be treefiddy dollaz!"

Instead, here's an approach