Ronaldo has reportedly been looking to leave Italy, as a result of their poor performances in the Champions League.
Juve were also toppled as Serie A champions last season by Inter Milan.
PSG are said to be one of the few clubs capable of signing Ronaldo, but bringing in Messi would make any move for the Portugal captain unfeasible.
There has also been talk of Kylian Mbappe moving to Real Madrid.
But it is believed that even if Mbappe leaves for a huge transfer fee, it would not be enough to help get Ronaldo to the Parc des Princes.
So, while the idea of Ronaldo and Messi playing in the same team is enough to get football fans excited, it seems as though there is no chance of that happening.
This makes things very complicated for Ronaldo as he plots his route out of Turin.