Bayern Munich are hoping to offload Tim Borowski, Christian Lell and Andreas Ottl this summer to finance a bid for Chelsea full-back Jose Bosingwa.
Club chairman Karl-Heinz Rummenigge confirmed the Portugal defender was one of new coach Louis van Gaal's primary targets and that an approach had already been made.
'We are holding talks, but we still need the approval of Chelsea,' said Rummenigge.
'He is one of the best right full-backs around.'
Lell and Ottl both deputised at right-back for Bayern last season after Willy Sagnol was forced to retire from the game due to injury and Massimo Oddo, who spent the season on loan from AC Milan, failed to impress.
Now, Lell and Ottl are set to make way as Rummenigge plans to 'sell one or twoplayers' after spending most of the summer in the buying market.
Franck Ribery is not one of the players up for sale, according to Rummenigge, despite club president Franz Beckenbauer hinting in an interview yesterday that the Frenchman could be allowed to leave.
'We all agree, including Franz Beckenbauer, that we will do all we can to keep hold of Franck,' he said.
'I am quite relaxed about the Ribery issue because nothing can happen withoutBayern. Even Van Gaal knows what an exceptional player Ribery is. Franck is one ofthe best three players in the world and we know what we have in him.'
Bayern yesterday released a statement effectively warning clubs off making any further bids for Ribery after Beckenbauer had said a sale could be possible at the right price.
Real Madrid, Barcelona, Manchester United and Chelsea are all reported to beinterested in the attacking midfielder, who himself has revealed his ambition to play at another of Europe's top clubs.
Big-spending Madrid appear to be the frontrunners with Zinedine Zidane, an advisor at the Bernabeu to returning president Florentino Perez, stating today that talks were 'on the right track'.