what exactly preferred moves are...
can any one provide detailed explanation abt each
move...
Andrea Barzagli is one the best CBs ..he doesnt have any preferred moves!!!how come??

It's basically a characteristic of a players style of play. A player with tries tricks for example, is likely to try step overs, back heels etc. It doesn't mean that a player is good at this though, just that he will try it.

Not having a preffered doesn't really mean a great though, it doesn't make the player any less effective.