The PSG striker has made it clear to authorities at the club that he fancies a move away from the club.
Cavani has made it public in the past that playing for Real Madrid has been a boyhood ambition. He has made it clear that should real Madrid make firm their desire to come for him that he'll do anything possible to convince PSG to let him leave.
Real Madrid needs a replacement for Ronaldo as there's no other player quite as prolific at delivering the goals. Cavani fits those shoes.
The only problem that may arise is Cavani's wages. The player currently receives 14 million euros a year at the French club. The move will most likely fall through if the player accepts a pay cut.