The agent of Sunderland winger Emanuele Giaccherini says their priority is to remain with Bologna.
The Italy international is on a straight loan with Bologna this season.
Furio Valcareggi told ETV: "Right now we are in the hands of Sunderland, who made a very important contract for Emanuele - and which tore him away from Juventus.
"I remind everyone that Sunderland makes as much money as Manchester United.
"Claudio Fenucci still has much esteem for my client, as well as (Roberto) Donadoni: we are working with Bologna to keep him there."