More defensive signings could be on their way to Chelsea this summer. Chelsea are already close to landing one central defender to replace Thiago Silva. Fulham’s Tosin Adarabioyo reportedly had his medical on Tuesday ahead of his move to Stamford Bridge. Adarabioyo will be joining Chelsea on a free transfer, with his contract at Fulham expiring at the end of the month. However, it looks like Enzo Maresca, who was recently named as Chelsea manager, could possibly see the arrival of another centre-back on top of the 26-year-old. Which central defender could join Tosin Adarabioyo at Chelsea this …