Players must expect a "significant reduction" in prize money when tennis tours resume, Feliciano Lopez says.
Lopez, a seven-time winner on the ATP Tour and tournament director of the Madrid Open, thinks prize funds will also be severely affected next season.
"The companies and the sponsors, they might have to fire employees," he said.
"This is happening everywhere in the world so the first thing they cut is sponsorship, and this is going to be affecting tennis massively.
Lopez, who should have been preparing to defend his Fever-Tree Championships title at Queen's Club from Monday, added: "We have to understand that tennis is not going to be the same, at least for one, two, three years.