Bob Bradley went odds-on to become Aston Villa's next manager following a major gamble on Friday. Sky Bet reported a "one-way flow of money" for the American, amid rumours that he was quitting his post as USA coach.
Sky Bet's Tim Reynolds said: "We've only laid one side to this market today so it looks as if people are believe that Bradley will be named as the next Villa manager.
"He's now our worst result in the fieldbook so we'll be hoping that Randy Lerner looks elsewhere."
Other firms slashed their prices to odds-on, including bet365, but they also pushed Bradley back out to later in the day.
Their spokesman Steve Freeth explained: "There were nibbles for Bradley on Thursday night, but the real plunge happened around midday on Friday when his price dropped from 3/1 into 4/7 in a matter of minutes.
"It now appears that reports of him departing his USA post are premature, although we're still seeing money at 6/4 which suggest something could yet happen in the future."
William Hill's Graham Sharpe also remained sceptical.
"There have been rumours from the States that Bradley has been lined up for the job but his lack of experience of the English game could count against him," he said.
