Chelsea agree Belletti deal

After declaring an interest in Dani Alves but not agreeing a fee with Sevilla, Chelsea closed in on Belletti, underlining chairman Bruce Buck's insistence that the club would not be held to ransom in any transfer deal.

Buck has also described Arjen Robben's move to Real Madrid as a "very good business result", with Jose Mourinho's squad taking shape as Chelsea look to win back the Premier League title.

Robben's move to Spain is worth around double the £12million Chelsea paid PSV Eindhoven in 2004 for the Holland winger, a healthy return for a player who did not want to stay at Stamford Bridge.

"Value is not the right word, we had a very good business result there," said Buck. "We pretty much doubled our money in terms of the transfer fee we paid three years ago."

Chelsea's transfer policy has shifted since Roman Abramovich first became owner, with chief executive Peter Kenyon outlining in the summer that money is available for the right players at the right price.

"It goes both ways in terms of not being held ransom, in respect to players we might be selling and not being held ransom in respect to players we might be buying," said Buck.

"In all those situations we are looking to get the price we think is appropriate, either buying a player or selling a player."

Alves, who has been tipped to join Robben in Madrid, is seen as one of the most exciting full-backs in Europe but in Belletti they have a 31-year-old, also Brazilian, who scored the winning goal in the Champions League final two seasons ago.

The club confirmed in a statement: "Chelsea Football Club and FC Barcelona have reached an agreement for the transfer of Juliano Belletti, subject to the player agreeing personal terms and passing a medical."