Boxing promoter Bob Arum told TMZ Sports that Manny Pacquiao would fight Conor McGregor if Floyd Mayweather doesn't agree to terms on the proposed superfight.
Pacquiao next faces Jeff Horn on July 1, though his schedule appears to be open after that fight.
"If McGregor is still looking for an opponent, Manny Pacquiao is there," Arum noted.
He also offered some advice to UFC President Dana White while he negotiates the potential McGregor-Mayweather bout.
"Be patient. Don't give in," Arum said. "Dana's a good negotiator, and he'll get the thing done, but he can't be pushed around by Mayweather and his people.