Chelsea manager Andre Villas-Boas has revealed that John Terry is rated only 50-50 for Tuesday\'s UEFA Champions League match against Napoli. The Blues captain was left out of the line-up for today\'s FA Cup fifth-round tie against Birmingham City, despite recovering from the knee injury which has sidelined him for three weeks. However, Terry only returned to full training on Thursday and Villas-Boas has cast fresh doubt on whether the defender could figure in Italy. Asked if he expected Terry to be fit for Tuesday, the Portuguese told ESPN: \"We will have to wait and see. At moment there is a 50-50 chance of him making it. He\'s going to train on Monday and travel with the team. After that we\'ll make a decision.\"