The committee overseeing reform at Fifa will decide in April whether it will conduct an investigation into the widespread allegations of past corruption at the highest levels of world football's governing body.
"We will decide then, after that meeting at the end of March, whether there should be an investigation into the more serious allegations of the past," Pieth told the Guardian. "We want to see Fifa's responses to our recommendations for future reform and other issues, including how seriously they deal with allegations themselves. If we are not satisfied with the response, all options are open to us, including setting up a commission with specialist investigators."
"I know this is very emotive and people are impatient," he said. "But people have waited 10 years for reform at Fifa, so I hope they can wait another two months."