A statement released by Leeds United on Friday morning read: "We can confirm that Leeds United and England legend Norman Hunter is being treated in hospital after testing positive for Covid-19."
"We would like to take this opportunity to remind the public and the media to respect the wishes of Norman and his family and to give them the space they need during this difficult time."
"Keep battling Norman, we are all with you."
The 76-year-old made 28 appearances for England between 1965 and 1974, as was part of the squad which won the World Cup on home soil in 1966.
Rules stipulated that only the 11 starting players received medals, but Hunter - along with Jimmy Greaves who also missed out on the final, received theirs in 2009 in a ceremony at 10 Downing Street.
Hunter was a legend for Leeds United making 540 appearances for the club, placing him fourth in their all-time rankings.