The 26-year-old tackles Paul Smith at the Echo Arena, Liverpool, in a challenge for the British super-middleweight title, live on Sky Sports HD1.
And mouthy David says the champion is in for a torrid night after being inspired by his local football team Northampton Town.
The League Two minnows beat five-time European Cup winners Liverpool on penalties last week.
"It was an amazing result," said David. "No one gave Northampton much chance, just like they are writing me off.
"But they went into the Lion's Den and came away with the win, and I'll do the same.
"Smith might think he's the Fernando Torres of boxing, but I'll reduce him to tears.
"I can't think of anything more dangerous in sport than a man with nothing to lose and everyone is in for a big shock next month.
"Liverpool and Everton have had a diasterous start to the football season, and by the time I've finished with Smith he's going to look like relegation material as well.
"Just like Liverpool, he's got a rubbish defence, not much firepower and his best days were definitely a few years ago.
"It must be pretty grim to be a sports fan in Liverpool at the moment, but things are going to get worse before they get better.
"I honestly don't see how I can lose this fight."
Tickets for "On the Waterfront" are priced at £40, £50, £80, £100 & £150 and are available from:
Echo Arena Box Office
0844 800 0400
www.echoarena.com
Ticketmaster
0844 844 0444
www.ticketmaster.co.uk
See Tickets
0871 220 0260
www.seetickets.com