Sir Bobby Charlton suffers from dementia, his former club Manchester United announced on Sunday.

The 83-year-old former attacker is considered one of the best English footballers of all time and became world champion with his country in 1966.

"Everyone at Manchester United is heartbroken that this terrible disease is affecting Sir Bobby Charlton. We support him and his family," Manchester United said in a statement on the website.

The news of Charlton's dementia comes two days after Nobby Stiles' death at the age of 78.

Stiles and Charlton played together at United in the sixties and seventies and were 54 years ago among the English team that was too strong for West Germany in the World Cup final at Wembley with 4-2.

Of the eleven English basic players from the final battle, only Charlton, George Cohen, Geoff Hurst and Roger Hunt are still alive.

Bobby Charlton's brother, Jack Charlton, passed away last July at the age of 85 and he too suffered from dementia.

Jack Chalton was a defender in the England squad from 1966.

The 1966 English World Champions with Bobby Charlton seated at the bottom right.

(Photo: ANP)

Charlton survived the 1958 air crash

Bobby Charlton is still regularly present at United, where he played in the main squad from 1954 to 1973 and with which he won the European Cup I in 1968.

Ten years earlier, he survived the plane crash in Munich in which eight of his fellow players were killed.

He played more than 600 games for United and became champions with the club in 1957, 1967 and 1967.

With 49 goals in 106 caps, Charlton was England's all-time top scorer for a long time.

In 2017 he was relieved by Wayne Rooney who eventually scored 53 goals for the 'Three Lions'.

Charlton's greatest individual award is the Golden Ball he received in 1966.