How do I unban a person from my fantasy league?

I recently removed and banned a player in my fantasy league (on yahoo) by accident. This was predraft as I thought he was a random and removed and banned so he wouldn’t be able to just come right back. Turns out he wasn’t a random and I want him in my league. How can I reverse this?

you want to go to your commissioner tools on your leagues home page, and find the place where the managers are kept. there should b something along the lines of banning or locking a manager. it should give u the option of adding or removing the person.