Several clubs are understood to be monitoring his availability. Ajax and Monaco have both made initial enquiries but have not yet opened formal negotiations. Any deal is likely to depend on Lukaku accepting reduced personal terms, with his current Napoli salary reportedly standing at around €12 million gross per season.
Fenerbahce are also tracking the striker's situation, although their recent signing of Mason Greenwood could affect their ability to pursue another high-profile attacking addition. Meanwhile, reports linking Besiktas with Lukaku have cooled.