Barcelona president Josep Maria Bartomeu has revealed that the club will make "at least two more" signings this summer.
The Catalan outfit have already added Ivan Rakitic, Luis Suarez, Marc-Andre ter Stegen and Claudio Bravo, but are now expected to target their defence.
"At the very least we need to replace Carles Puyol, he's retired from football and has agreed to help [Andoni] Zubizarreta in sports management," Bartomeu told reporters at a press conference.
"There'll be a minimum of one or two more players coming in on defence. The amount of transfers is still left to be determined, but there will be at least two more."
Barcelona failed to win a major trophy last season.