Ronaldo and his agent, Jorge Mendes, has been pushing Real president Florentino Perez over talks about a new contract for much of the year - but have received next to no encouragement.
Ronaldo has argued that last season's Double and Ballon d'Or warrants a pay-hike, though his claims have fallen on deaf ears.
Meanwhile, it's emerged this week that Messi's new four-year deal is worth €50m-a-year - including bonuses - and he has also been handed a €100m signing on fee to be paid in four yearly installments.
Don Balon says the staggering figures has left Ronaldo furious. The Portuguese is on a base €21m salary, despite outstripping Messi both individually and with Real over the past year.