I don't really understand Power Training every player, I tend to have around 14 players at least 6* mainly 7* or better your likely to be playing most with having 6 players as reserve at 5* bought cheap off the market or declined from the first team, no point letting some talent go to waste.
Don't think he is doing PT, but preparing them for "tanking season" (making them tired and out of cond/morale etc). Same **** I did last season