Ricky George, football pundit and former Hereford United player, has warned that the Bulls must take Sutton seriously next Saturday in the FA Cup-tie.
"Sutton could quite easily be the giantkillers of the first round," George told the BBC.
"They are going well in the Ryman Premier and are well capable of pulling off a shock at Edgar Street just like we were at Newcastle all those years ago.
"These shocks can still happen. Sutton will have heard all about Hereford and will be right up for it.
"They will not travel to Edgar Street thinking of anything else than getting a result."
Meanwhile Sutton supporters have filled two coaches for the game on Saturday.