I've never understood why people were so eager to put him at left back, it just highlights all the faults he has. He's constantly drifting across to play as a CB when the opposition are attacking Lichtsteiner's flank, and he gets more of a chance to show off how clumsy he is in attack. He cannot cross well, and his passing is bad when he's under pressure, and he doesn't have ball control.
Conte really needs to find a way of getting him back to centre back soon.