Courtois is a proven goalkeeper, winning the Golden Glove in the past Premier League season.
Moses and Alonso are both capable of playing forward and supporting the attacks, though Alonso is more defensively aware.Azpilicueta and Cahill are both able to function as ball playing centre-halfs and are solid ball-winners.
Luiz is quick and physical, and is able to move up the field into a defensive midfield position is required. He sometimes is guilty of pushing up too far and leaving the other defenders exposed.
Pedro is another former Barcelona man, the Spanish national making the move to Stamford Bridge in August of 2015. He is brilliant on the counter attack, and has a good strike from range.
Eden Hazard is currently one of the best inside forwards in the world, the Belgium international scoring 16 goals in the Premier League season just passed. A prolific dribbler and solid set piece taker, Hazard has been linked heavily to Real Madrid over previous seasons, with a move said to be likely in the event of a CR7 retirement.