Silva has revealed he - not the team doctors - will make the final decision on whether he plays in Sunday's FA Cup semi-final against Chelsea.
He has travelled to London with the team as he recovers from a hamstring strain.
"It really depends how I feel and not just what the scans show," said Silva. "If I feel I am going to break, I won't play. But on the flip side, if I feel I can play then I will ask to play regardless of the scan. It really does depend on that."