Silva picked up a hamstring injury in victory at Manchester United.
"I have to have tests done and we will look at the results and see if we will be ready for Sunday. I felt it on the pitch and still feel it now but I have to wait until the tests and then see for Sunday.
"It will be a big blow for me if I can't play. It's a game that everyone wants to play but if I can't play then we have other players that can play."