The shorts were worn by the boxing legend during the "Thrilla in Manila" Five offers have already been submitted, the highest of which is $3.8 million. The reserve price, the minimum amount set by the seller, had not been reached.
The sale, which started on March 27, takes place online until April 12. The auction also features French basketball prodigy Victor Wembanyama's jersey. In November, Sotheby's had already sold for $762,000, almost ten times more than the initial estimate.