Cavani's quite underrated in England because no one watches Serie A. Phenomenal striker, his goal record for Napoli speaks for itself.
No way will Arsenal splash that kind of money on one player, it would require a gigantic turn around in club policy.
Who underrates him oit of interest? Everyone I've spoke to that has at least a small relative knowledge of world football would class him as one of the top 10/15 strikers in the world today.