Dimitri Seluk hopes to finalise the midfielder's move to Manchester City.
A sticking point for interested clubs could be the high transfer fee Barca are likely to demand, with the Catalan giants reportedly slapping a 36million euro price-tag on the 27-year-old.
Seluk said: "It seems to me too much money. His club have shown they want him to leave, it's not normal that they're asking for this amount.
"If (Barca president Joan Laporta) likes Toure so much, he could have explained why he didn't play so much.
"This year we haven't spoken to him even one time, and if he leaves it's because that was lacking."