So how would you go about introducing your 4 year old child to there father?

[?c????]

After 4 years my son's father has finally decided he wants visitation to my son. the issue is, his telling me he wants to change my son's name and all this stupid stuff and threatens to take things to court as soon as I don't instantly agree with him.

I'm wondering how I would go about this whole situation? My son has never met his biological dad.
His autistic as well so he won't understand me sitting down and talking to him.

I'm just at a lost of how I should go about it. Another issue I have is his biological dad doesn't know my son is autistic. He demanded a DNA test which I did. After the DNA test was done, he emailed me asking for visitation, and we have emailed back and fourth for the past week.

I don't think it is something I should really tell him in an email.

Should I arrange to meet him and tell him then wait to see if he still wants visitation, and if he does what would be the next step? Or just sort everything out through a court? I don't like being threatened every time I don't do as he wants. It's childish. I am not denying him visitation, I never have.I'm just cautious as if he decides a month down the line it's to much like hard work and disappears I'm the one that is going to have to deal with the aftermath. And it wouldn't be fair on me or my son.