Young has been dogged by injury setbacks this season with the knee issue following hip and ankle troubles.
He has been sidelined since the 3-0 defeat at Liverpool in early December.
Manager Gerard Houllier said: "Luke saw a specialist in London, so it will depend what the results are. He does training and he doesn't feel anything and then at training the following day he feels something.
"Obviously we need to sort that out. I played him regularly every game until the Liverpool game and then after that he got injured and never came back."
Houllier is confident winger Stewart Downing (shin) will be available for Saturday's home clash with Fulham, adding: "Stewart should be okay. It was just a kick on the side of his shin."
Source: PA
Source: PA