I wouldn't take his calls...........
If it were me, I would stop all communciation between the two as much as possible and even check to see if there is a way to block all calls coming from the jail so that he can't get in touch with her. I honestly wouldn't tell her that he called because that will get her wondering if something was wrong and she will be more willing to contact him. I know that when my daughter called from jail, I had the choice of accepting or blocking future calls from this number...that may be something you need to look into.
Keep your daughter going on the straight and narrow...it doesn't sound like she needs this guy in her life!!