Bro, you need to see which attributes of your player are lower and then choose a drill which has no attributes of GK.
There are only three Drills which don't have any attributes of GK.
1) Press the Play
2) Slalom Dribble
3) Use you head.
Decide among these three Drill which will be best for training SA and new positions.
Generally press the Play is best for Strikers and Mid fielders as they have low defensive stats and Slalom Dribble for defensive players as they have low attacking attributes.