Leeds say club great Norman Hunter remains "severely unwell" in hospital after being admitted with coronavirus last week.
Hunter, 76, was an unused player in England's 1966 World Cup-winning squad and won two English titles and other silverware at Leeds.
The defender had a fearsome reputation as a tough tackler, shown by his nickname "Bites yer legs".
"Norman Hunter continues to battle the Covid-19 virus in hospital and whilst he is, as expected, fighting incredibly hard, remains severely unwell," said a statement from the Championship side.
"His family would like to take this opportunity to thank all Leeds United supporters for their amazing messages and well wishes."