A year ago I mistakenly overstayed for 5 days and I was forced to return to my country but I didn't want to pay the plane ticket, the HK govt paid and flew me back. Now, I need to go to HK again for business, just a week… Will they let me enter HK? My passport is Italian.
I'm not certain how HK will treat this but i'm sure about a similar situation in Australia. When a government sends a visitor back home over their expense, they usually not only pay for the flight back but also impose some fines which a visitor usually is not able to pay. This is done to make sure that such visitor never returns to their country. In your case, HK government payed for your flight & i believe they would have imposed some fines over you as well. So in this situation, if you want to get back to HK, you would first have to clear the fines.