I’m not entirely sure if OLAD would be the best bet, only because he’d only be experiencing a few exercises each week. I think a TLAD or TLAD (that would be two lift a day, or three lift a day), with modified set/rep parameters could be the right ticket.
Maybe something like:
Mon.: Squat 4x8, Barbell Row 4x8, Gratuitous Bicep Exercise 3x12
Wed.: Flat Bench 4x8, Standing Military Press 4x8, Gratuitous Tricep Exercise 3x12
Fri.: Deadlift 4x8, Lunge or Step-up 4x8, Generic Ab Crunching Move 3x10, Generic Ab Twisting Move 3x10
I’d also consider a different page from Dan John’s book (and most recent article), and start each day with the warm-up he uses for his high schoolers. The whole thing should take less than 15 minutes:
-Overhead squat (with PVC pipe): 3x8
-Hip flexor stretch
-Medicine ball ab throws 1x25
-A minute or so to stretch anything “tight”
Superset for time (should take less than 2 min.)
A1: Dumbbell Squat 3x10
A2: Swing 3x10
Assuming he’s never lifted weights before, this would introduce him to a bunch of movements throughout the week, and will hopefully kick start some interest in lifting. After a month, or month and a half, I’d rearrange the sets/reps and days, but keep the exercises mostly the same.
Does he do any sports right now?