""I think that at the end of the day the 2022 World Cup will not take place in Qatar,"" Zwanziger said in an interview with Sport Bild Plus.
The former head of the German football federation (DFB) cited high summer temperatures as the reason Qatar would lose the right to host football's global showpiece.
""As Mr Zwanziger himself says, it's his personal opinion,"" a FIFA spokesman responded to AFP subsidiary SID when asked about the German's statement.
Zwanziger said: ""Doctors say Zapatillas Vans Old Skool Classic Azules Blancas Baratas , and I had insisted on this point in the protocol, that they cannot guarantee that a World Cup can be held in summer in these conditions.""
While Qatar has reportedly developed stadium cooling systems, Zwanziger said ""the World Cup involves not only stadiums. There are fans coming from the four corners of the world who will be concerned by the heat"".
""The first incident putting a life in danger will be subject to an investigation. And that, nobody in the FIFA Executive Committee would want to reply to.""
But in an interview with Die Welt newspaper, Hassan al-Thawadi Zapatillas Vans Old Skool Grises Blancas España , secretary-general of the Qatar 2022 organising committee, declared himself ""sure that the 2022 World Cup would take place in Qatar"".
""No, I'm not worried,"" he said. ""Firstly because there's no basis to lose the World Cup.
""And secondly because it's the first World Cup in the Middle East.
""When people think of this region, it's rather in terms of conflict. The World Cup will be an occasion to unite peoples. It will leave a positive heritage.""
Later Monday Zapatillas Vans Old Skool Granate Baratas , the Qatar 2022 World Cup committee released a statement which read:: ""Qatar will host the FIFA World Cup in 2022, despite comments of FIFA executive committee member Dr Zwanziger, which reflect his personal opinion and not that of FIFA.
""The only question now is when, not if. Summer or winter, we will be ready. We have proven that a FIFA World Cup in Qatar in the summer is possible with state-of-the-art cooling technology.
""We have demonstrated that our cooling works in outdoor areas beyond stadiums. This summer we welcomed fans in Doha to an open-air Brazil 2014 Fan Zone with temperatures cooled to a comfortable 22 degrees Celsius.
""The evolution of environmentally-friendly cooling technologies is an important legacy for our nation Zapatillas Vans SK8 Hi Slim Leather Negras , region and for countries with similar climates - promising to expand the reach of hosting major sporting events to countries where it was never thought possible before.""
Controversy has plagued FIFA's awarding of the World Cup to Qatar in 2010, with summer temperatures in the