Training > Coaches > Workload. If it's heavy, there will be less time spent with each player in each category, hence not enough attention. You need more coaches basically.
I don't have FM14 but that is exactly the same way FM13 is. It is always Light, no matter what. I have never seen anything more than light.Only problem is, you might not have room for more coaches. At least that's my problem, and the board refused to increase number of coaches allowed.
But it does seem like the workload has been tweaked a lot, in FM 14 the workload was always light even if I had only 1 coach assigned to the category and 30 players.
There doesn't even seem to be a board allocation for 'coaches' exactly; only for 'other tottenham staff'. Seems a pretty small no of coaches allowed anyway, particularly for a big rich club - 6 total if you don't count assistant manager, U21 manager, etc.