Former Fifa president Sepp Blatter says the decision to award the 2022 World Cup to Qatar was a "mistake".
Blatter, 86, was president of world football's governing body when Qatar was awarded the tournament in 2010.
The Gulf state has been criticised for its stance on same-sex relationships, human rights record and treatment of migrant workers.
"It is too small of a country. Football and the World Cup are too big for it," he told Swiss newspaper
Tages Anzeiger.
The Qatar World Cup, the first to be hosted in the Middle East in the tournament's 92-year-history and the first during the Northern Hemisphere winter, takes place from 20 November to 18 December.
Blatter said Fifa had adjusted the criteria used to select host countries in 2012 after concerns were raised about the treatment of migrant workers building World Cup stadiums in Qatar.
"Since then, social considerations and human rights are taken into account," he added.