Brazilian international Kleber has insisted he is happy to remain with Cruzeiro amid increasing speculation about a move to Liverpool, but would entertain a move to the Premier League should a fee be agreed between the two clubs.
The 25-year-old is thought to be one of Rafael Benitez's top targets for next season as the Reds manager looks to challenge Manchester United for the Premier League title.
But the striker will not come cheap, with Cruzeiro spokesman Guilherme Mendes claiming they will demand in the region of £13m before considering selling a player who has scored 19 goals in 21 appearances for his club. But he also insisted the player was not for sale.
"I don't want to talk about this anymore. It's getting boring. If I play badly in a couple of days, the fans will start saying I want to quit,'' Kleber said to Radio Globo BH.
"If I had an offer and if it's profitable for both me and Cruzeiro, my agent (Giuseppe Dioguardi) and (club president) Zeze (Perrella) will try to sort it out.''
Kleber was signed from Dynamo Kiev this year in a swap deal for forward Guilherme which saw the Ukrainian side pay an additional £4m.
Mendes said: "Firstly, Cruzeiro have no interest in negotiating for forward Kleber. He was signed and inked a long-term contract with the club and Cruzeiro expect he will win a number of titles in our shirt.
"Neither Cruzeiro nor the player's agent have been made an offer from any European club at this time. There have only been discussions between the player's agent and Zeze about what would happen if a &euor;7m (£6m) offer was made.
"Cruzeiro told him that the club would not discuss any offers of less than €15m (£13m) .''
