League Two Newport stunned Championship outfit Leeds United at home in the third round earlier this month and are hopeful of pulling off another famous cup shock at the weekend.
Looking ahead to the 5.30pm kick-off, Flynn is remaining realistic, but at the same time is full of optimism over the possibility of causing another upset.
“It’s a free hit,” said the 37-year-old, who embarked on his third spell as a player for Newport – his hometown club – under the management of ex-Spur Justin Edinburgh in 2012 and took over as boss last year.
“I go into every game I ever play, whether it be as a manager or a player, with a lot of confidence and if any player thinks that we can’t win on Saturday then they will probably be sat next to me on the bench or up in the stand because we have to believe that we can cause an upset.