Sky Italia says with uncertainty surrounding the future of top goalscorer Pierre-Emerick Aubameyang, the Gunners could now be in the market for a new attacker.
And journalist Gianluca Di Marzio reports Arsenal have lined-up Mertens as a potential replacement.
Aubameyang only has 18 months remaining on his current contract at the end of the season.
Rumours have mounted he has informed Arteta already that he wants to leave the North London side this summer in order to join a team capable of challenging for top honours.
Now Mertens, 32, could provide the Gunners with a cheap alternative for the marksman.