Genoa have reportedly activate the €4m clause to buy Cristian Ansaldi from Zenit, but multiple clubs want him next.
Sky Sport Italia note the left-back is now a Genoa player after his season-long loan, as performances made the €4m clause a bargain.
He is unlikely to stay at Marassi for long, as Serie A sides are already lining up to pay almost double that sum.
Roma, Inter, Milan and Lazio are among the contenders, while Juventus and Napoli have also shown interest.
The Argentine turns 30 in September, but this season provided five assists in 24 Serie A games.