The Merseyside giants are preparing for a busy summer and they are expected to spend on multiple players based on Arne Slot's recommendation.
This could coincide with player sales.
Nunez was on the radar of Al-Hilal last winter and the Reds are poised to open the door for his exit for around £68 million this summer.
Diaz has been a key player under Slot this campaign, but his future is also uncertain amid the lack of progress over a contract renewal.
The Colombian, who has managed 16 goals and eight assists this term, is also on the radar of Al-Hilal. He could be signed for £68m too.
Liverpool could cash in on both players to secure a financial boost. They are expected to pursue a marquee striker ahead of next season.
Newcastle United's Alexander Isak remains on their radar and he could be signed for a staggering figure of around £150m this summer.