Ian Porterfield, who scored a legendary FA Cup final winner and later managed Chelsea and a string of national teams, died on Tuesday, his family said. He was 61.Tributes were paid today to the Armenia manager, who was diagnosed with colon cancer earlier this year. He died in a hospice in Surrey, south-west of London. Porterfield scored the only goal in the 1973 FA Cup final as second-tier Sunderland defeated English top-flight giants Leeds United 1-0 at Wembley, one of the biggest shocks in FA Cup final history.“He may have been a football man all his life, but I know him best as a wonderful human being who was liked by everyone he came in contact with,” his widow Glenda said.