so hes not a brilliant set piece taker then? ie free kick crossing and passing stat are all less than 15?
if so then i dot know how much i can help you, as most tactics require a really precise delivery to take advantage of oppostion weakness.
i do ahve a free kick tactic tht ive been using in a lower league game with poor free kck takers. its not exactly massively succesful, but does get its fair share of goals.
find any players who or tall, or with good, heading, strength, jumping, balance, bravery, and anticipation. not all are needed but a player with good stats in those catergories would be ideal.
set their attack free kcik instruction to mark GK. try and get 2 or 3 palyers to mark the keeper. then set your free kciks to be delivered to best header. set a couple more palyers to go forward to pick up any scraps that get partially cleared.
this tactic doesnt need a great set piece taker as it relies on the strentghs of the guys trying to win the header crowding out the goalkeeper with sheer numbers around the 6 yard box.