In the last few games I noticed my forward taking dives and getting yellow cards for it !
How can I remedie this?
maybe after the game you could fine him for unprofessional behavior!!
also try to look under the prefered moves list, if there's nothing related to dives!!
oh, and you should check his professionalism / sportsmanship attributes, they maybe low and at this matter you are powerless, simply try to find someone more professional!