- Marcos Alonso
Perhaps something of a surprise, the Spanish left-back was a relatively low-key arrival at Stamford Bridge despite his own sizeable fee to bring him to the Premier League, after three years in Serie A with Fiorentina.
However, despite a hugely disappointing first Premier League appearance in the 3-0 defeat against Arsenal, Alonso’s introduction to the team as left wingback from the next match onwards, in Antonio Conte’s 3-4-3, has seen the blues clock five wins on the bounce with zero goals conceded. His presence in the squad has also helped Chelsea come up with a system which doesn’t rely on Branislav Ivanovic playing right back, where the Serb has struggled in recent months.