He is a very talented player and one of the best young players who were playing in Olympiacos U-21 .
Giorgos Valerianos began playing football with Olympiacos .
Giorgos Valerianos is a very talented Giorgos Valerianos and one of the best young players who were playing in Olympiacos U-21 .
Giorgos Valerianos began playing football with Olympiacos .