Go to "training"- Select the desired player and press "specialist" training"
Here you can choose either skill card or position.
I know that, but the point was he is a defender. I can't make him a striker or something. ^^
I tried making him learn been Back Wing, maybe it will increase his SB rating, but it didnt. Eventually, I sold him for 48M! It's an 10M profit for me. ^^ And exactly when I needed to money. I was only 2 weeks away from having to pay my salarys, and the whole month it jumped me I didn't have enough money. Phew. I have Signed C.Vela, for 24m now, as I'm not too happy with jovetic. I have no put him for sell. I have 18M left now ^^