United host Chelsea tomorrow in the quarterfinals.
Ferguson said: "A big game is the best. Weâ€™re at home and with a home draw in the FA Cup weâ€™ll play anyone.
"Chelsea have a terrific cup record themselves, the best in the last decade, and we havenâ€™t won it for nine years so there are a lot of incentives for us.
"Rio Ferdinand hasnâ€™t got a medal, for example, so thatâ€™s another great incentive for us."