1) you need to earn the goalkeeper training to drill to train your GK (level 3-4, I do not recall)
2) Go to training report and click on that 5% to see where you improved
LV3-4...are you kidding me?? i am already in LV15 ....going to be LV 16 very soon....
still the GK is not gaining anything at all in the GK drill... and like Arion said... it skill also in attack...that is like....what...???