The 23-year-old Nigeria international was born and raised in England, coming up through the Chelsea youth academy.
After a loan spell at Hull City, he joined Torino in 2018 and made the move permanent for €10m.
According to La Gazzetta dello Sport, Carlo Ancelotti’s Everton and fellow Premier League side West Ham have alerted Toro to their interest in Aina.
He made 25 competitive appearances for the Granata this season, contributing two assists.
His contract with Torino runs until June 2023, but it’s reported he wants to move back to England in order to be closer to his family.