Firstly weight and height dont mean anything really, they are just imformation for a player!, second it is a waste training a new position as it takes too long , you might aswell go buy another player in that required position!, thirdly if the player has not performed after about 6 or 7 games stick him im the reserves, train him then see how he performs at the start of next season, if he is still under performing get rid!, to avoid these type of players only buy hot prospects or the highest priced youngster as these tend to be good players