He is not underrated 😆
He is underperforming though. The Zlatan excuse has been overused as well. Zlatan has missed plenty of games and he still hasnt impressed. There comes a time in every players career where you just have to realize, that they are either past their peak and that despite being class players with huge potential a few years ago, will probably never take the "final step" and become a megastar. Its time to realize it with Cavani. Yes, he was superb for Napoli, but he made his choice to go to Paris and he hasnt taken the next step in his development. And we shouldnt forget that despite all, Serie A and Ligue 1 are much, much poorer in quality than PL.
If you still honestly think we should sign him, just take an evening or two and watch, watch a PSG match closely and you will see that he is no match for Giroud nowdays. Giroud has been developed into a phsyical beast with a soft touch and a superb link up play. Cavani is no where close to Giroud overall.
