It has been claimed that Chelsea are not done yet when it comes to bringing in new defenders this summer. The Blues have been looking hard in their quest to replace Thiago Silva after his four-year spell at Stamford Bridge came to end. Free signing Tosin Adarabioyo has impressed a lot of people at Chelsea in his first few training sessions, with his leadership skills being talked up already. READ MORE: What Tosin Adarabioyo has already been promised by Chelsea for next seasonHowever, the potential requirement to replace Trevoh Chalobah is still there. It is believed he is still available for t…