"We will learn more by playing Cannock than anyone else," he said. "Clearly, we are very much the underdogs but it will be the biggest day in the club's history. They play Southgate the previous day, so who knows?"
With Sunday's win against Spalding extending OC's record to 19 wins in as many games this season, Knapp has reason to be confident.
The draw also features two all-Premiership contests. Canterbury visit Birmingham to take on Barford Tigers and Beeston, who produced a surprise defeat of Southgate on Sunday, travel to Doncaster.
The second non-National League side in the last eight, Chichester, have a home draw against Stourport, the only team left in the competition to have contested a Cup final when they were beaten 3-0 by Havant at Luton in 1990.
EHA CUP Quarter-finals: Old Cranleighans v Cannock; Barford Tigers v Canterbury; Doncaster v Beeston; Chichester v Stourport. Ties to be played Sunday 25 January.Reuse content