Local media have reported that the exciting Spanish international could become the Barcelona squad's highest-paid player if he meets certain performance-related clauses.
The veteran Polish forward, 36, reached 27 league goals for the season, although he finished behind Real Madrid's Kylian Mbappe on 31.
The win comes against a mighty Barcelona team considered on paper to be the best in the world.
The Brazilian, whose previous deal was set to expire in 2027, was vital as Barcelona won a domestic treble of La Liga, the Copa del Rey and the Spanish Super Cup.
Villarreal qualified for next season's Champions League with an entertaining 3-2 win at newly-crowned La Liga champions Barcelona on Sunday.
Barcelona's 28th Spanish league title caps a remarkable season defined by teenage sensation Lamine Yamal, who at 17 has emerged as world football's most electrifying talent.
A stunning Lamine Yamal strike helped crown Barcelona LaLiga champions with a 2-0 win at local rivals Espanyol on Thursday, with victory ensuring Real Madrid cannot catch them at the top of the table.
Defending champions Real Madrid may well lose the LaLiga title race to archrivals Barcelona tonight, but Los Blancos were happy to keep the fight alive for another day with a last-gasp 2-1 home win over Mallorca on Wednesday.
Real Madrid snatched a last-gasp 2-1 win over Real Mallorca on Wednesday to delay Barcelona's title celebrations.
Together, they have not only lifted Barça back to domestic supremacy but turned every encounter against Real Madrid into a stage for their individual magic.
Yamal's name now sits comfortably among Clasico folklore — and at just 17, he isn’t just part of Barça’s future. He’s already shaping its present.
Barcelona coach Hansi Flick pledged to work on his team's defending next season after his side edged Real Madrid 4-3 in a thrilling La Liga Clasico on Sunday to put one hand on the title.
Raphinha scored twice as Barcelona overcame a two-goal deficit to secure a crucial 4-3 home victory against rivals Real Madrid in a pulsating Clasico on Sunday, edging them closer to the LaLiga title.
Barcelona matched a 42-year-old record on Sunday by eating archrivals Real Madrid for the fourth time in a single season, securing a thrilling 4-2 victory at the Estadi Olímpic Lluís Companys.
Record 10-time champions Barcelona top the league table with 81 points from 29 matches for an unassailable six-point lead over rivals Real Madrid with just one game remaining in the season.
Paris Saint Germain head coach Luis Enrique made a bold prediction about tonight’s El Clasico in La Liga between Barcelona and Real Madrid, saying the Catalan Giants will easily defeat their arch nemesis.
Barca lead the Spanish top flight by four points ahead of rivals and defending champions Real Madrid with four matches remaining.
Barcelona's dreams of a Champions League, Copa del Rey and LaLiga treble have vanished after Inter Milan roared back from the brink of elimination to grab a phenomenal 7-6 aggregate win and end the Spaniards' European campaign in the semi-final.
Hansi Flick said that his Barcelona players will bounce back from their dramatic Champions League semi-final defeat to Inter Milan, a tie which finished 7-6 on aggregate for the Italians after two epic matches.
