You might look up the Ag Review you can advertise on there and if I remember right I saw people advertising looking for farm animals for their no kill farm a while back.
Here is the link. Check the wanted farm animals section.
Also placing an ad at the local feed stores when the time comes may not be a bad idea. Or maybe the local high schools for their ag program too.http://www.ncagr.gov/paffairs/AgReview/class.htm
Thanks for helping him out, good luck.