What is/are the main difficulty Qatar faces in hosting the 2022 World Cup?

Qatar won the right to host the World Cup in 2022 despite its scorching temperatures, which often exceed 40 degrees Celsius. The super-rich Gulf state promised to install solar-powered cooling systems in the stadiums, and fan zones. But Peter Velappan, who led the development of Asian football for three decades, until he left the AFC in 2006, has suggested a different solution. He said no one would want to play in those conditions and has strongly recommended that FIFA reschedule the tournament for January or February.