The young boy, Tommi Miller died after an unsuccessful attempt to carry out a bone marrow transplant.
The Cambridge born boy met Terry, his idol and some other Chelsea players at Stamford Bridge in June last year and Terry says he was devastated to hear of the kid's passing away.
Speaking to Cambridge News, the 35-year-old said:
Having had the pleasure of meeting Tommi at a Chelsea game I was totally devastated to hear of him passing away. I'm sure his family and friends will give him the send off he deserves.The funeral for Tommi will take place on Thursday April 14 with everyone expected to wear Chelsea or Cambridge united Jerseys during the funeral service.