Torino president Urbano Cairo has revealed plans to buy Ola Aina outright.
The Chelsea fullback has just enjoyed a superb season on-loan with Toro, with the deal carrying a €10m option.
"I will call Chelsea tomorrow (today) to activate Ola Aina's clause," declared Cairo on Monday.
Aina scored three goals and an assist in 32 games for Torino this season.
For their part, Chelsea have intimated they'd prefer to hold onto Aina before making a final decision over preseason.