You need something like a carry case to bring the bunny home in.
Cage wise, if you have a wire cage then you will need some area in it that is solid so he can get off the wire. If its a flat bottomed, solid cage then thats not an issue.
Food bowl, water bottle/bowl (whatever the bun is used to).
You will need your own supplies of hay and the same food the breeder feeds.
You may want to get a litter tray, and some litter.
You will need some sort of stimulation (such as toys).
You will need things to clean the cage too.
Depending on your cage you will need to buy something that the bunny can hide in.
Is the bun going to be an outside bun or an inside bun?
By the way, he is VERY cute