opinions doesnt matter, the state of the team does.
Barcelona can totally state he's not going under 25 mil. they can totally do this
Fiorentina on the other hand... Jovetic is important, if he wants out to a topteam, they'll sell him cause if he gets depressed from not beeing able to leave and play bad, his market value will drop, and they cannot afford this.
Suarez is the same, but less depending. If he wants to leave he'll go, but pool will ask what they want. They however also know he's their main carry. they'll want enough cash for him, but cant just demand what they want like barcelona for sanchez. the difficult part is getting suarez to be wanting to leave pool.