Chelsea are in need of defensive reinforcements with John Terry set to leave the club on a free transfer next month. A number of big-name centre-backs have been linked with a move to Stamford Bridge, including Juventus star Leonardo Bonucci and Napoli's Kalidou Koulibaly. However, Italian reporter Emanuele Giulianelli has claimed the Blues are poised to make a late bid for Roma centre-half Kostas Manolas. The Greece international is reportedly on the brink of a move to Zenit St Petersburg but the Blues are hoping to derail the deal.