How to stop a person from commenting on my timeline w/o un-friending or blocking?

[SirNicoli22]

I have a friend who has been posting some harsh and inappropriate posts on my wall lately. He's going through some stuff in his life right now which is leading him to do that. I don't want to un-friend or block him because most of the time, he is good about his posting and he is my friend. Recently though, he's been taking posts too far and is not getting the message when I tell him that he needs to stop posting on my wall in the way that he is.

In the 2013 "privacy settings," under the "timeline and tagging" section, you have the ability to change 'who can post on your timeline' to either "friends" or "only me." However, setting that to "only me" stops all other friends from posting on my timeline also.

Is there a way that I can stop him specifically from posting on my timeline, while allowing other friends to continue to post, without blocking or un-friending him?