Robson is the coach of the Thai national football team and had the operation in Bangkok. He will need further treatment, but his doctor is sure that the cancer can be treated.

Robson joined Man Utd in 1981 for a record fee at the time of £1.5m. He is regarded as one of the best ever England players and scored 26 goals in 90 games for his country. Even though his career was dotted with many dreadful injuries, Robson also helped United to win three FA Cups, two Premier League titles and the 1991 European Cup Winners' Cup.

Check out the video below to see one of Robson's best goals, a screamer against Liverpool in the 1985 FA Cup semi-final replay. United later went on to win the final against Everton 1-0, in a match that became famous for featuring the cup final's first ever red card, after United's Kevin Moran was sent off.