Josep Bartomeu has reiterated the club's interest in Neymar but insists an agreement has not yet been reached, while Tito Vilanova will remain in charge next season
The Primera Division leaders have been linked with players such as Borussia Dortmund defender Mats Hummels and Santos forward Neymar in the past few months, but Bartomeu has stressed they have not reached an agreement with the latter just yet.
"We'll make four or five signings in the summer," the club's vice-president told Catalunya Radio. "We need to shake up the squad. We've also got players from the B team.
"We haven't signed Neymar. He's a player we are interested in, we've said that before, and we'll see what happens when the season finishes."
Bartomeu also insisted Tito Vilanova will continue to be Barcelona's head coach next season.
He added: "Tito will continue next year."
Vilanova replaced Pep Guardiola as Barca coach at the start of the 2012-13 campaign and guided them to their best-ever start in La Liga.
The Camp Nou side currently sit top of the league table, holding a 13-point lead over second-placed Real Madrid.