I think a simple A/B is the way to go.
Something like Starting strength might be right up his alley. Getting stronger on the big lifts.
This is an A/B workout that I did that I really enjoyed:
T-bar rows 3x8
db incline bench 3x8
db curls 3x8
Decline bench crunches bwx3
Bench Press 3x6
DB Rows 3x8
Db lateral raises 3x8
Rev. Pec deckx3
I really enjoyed this routine. It is very similar to a John Christy style routine. I did it 3 times a week, but it would be just as suited for a twice a week routine. And, rep ranges can be changed where desired. That won't make a break the routine.
"The fastest way to get strong muscles is also the fastest way to make them bigger. We know what works best to make them strong in the shortest time possible. If you want to get big, do the thing that makes them strong." - Marc Rippetoe
Zdravko Veselin Gaeta
I am not a powerlifter nor am I a bodybuilder. I just want to be big and strong.