The 19-year-old wowed the judges during the opening audition show last month, performing an emotional take on Adele hit Make You Feel My Love.
However according to The Sun, the teenager has been told to rest after breaking four ribs in a game of football.
It comes just two weeks before the live shows start, and Sam is tipped to have made the final 45.
“Sam has been told to rest and take it easy. Everyone on the show is hoping he is going to be OK to continue," an insider told the tabloid today.
They explained: “But he is a determined lad and has told producers he will be there even if he is wincing in pain. He is just glad that he isn’t a dancer or a variety act as he would have been out of the show for sure.
“At least with singing he can just sit there and let his voice take the strain.”