I'm not a teacher and I can barely play, but I've had some experience WITH teachers. Have him bring in a recording of a song he wants to learn. You figure out an accompaniment and teach him. Work in some barre chords and have him play along with the recording so he can't slow down or stop and if he misses a chord, he just picks it up 'next time'.

If he really wants to play that song, the inspiration will get him to push through an F or Bmin or whatever.

Actual guitar teachers may have other ideas, but sticks won't work without a carrot, if you get my meaning. Some people don't have that much a problem with developing the discipline needed to learn boring stuff in order to play the good stuff. I've never been that sort of person and it's not because I haven't tried. If you can work the things he needs to learn into something that inspires him, you can't do better.