Barcelona keep Eintracht Frankfurt's Andre Silva on their radars, as per Diario Sport.
The Portuguese is considered as Erling Haaland's alternative.
The striker's agent, Jorge Mendes, has already contacted Barca regarding the player's possible Camp Nou move.
Eintracht could sell the Portuguese for just €35m, although the 25-year-old's estimated value is €45m.
Atletico Madrid and Manchester City are also interested in the striker, it is said.
Last season, the forward bagged 29 goals and recorded 10 assists in 34 appearances for the Bundesliga side.
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Pique: I would love to have Haaland at Barcelona
During his interview with MARCA, Gerard Pique was asked whether Erling Haaland could end up at Barcelona one day.
"I have no idea on this, but I wish he would come. There are great players who are already with us, but it’s a decision the club has to make," Pique answered. (h/t Football Espana)
Haaland was rumoured to be among Joan Laporta's top targets for this summer. However, it now seems like the Norwegian will stay at Borussia Dortmund for at least another season.
This could be good news for Barca, as Erling will reportedly have a €75m clause in 2022. This would increase the Catalan's chances of getting him.
Haaland finally opens up on his future amid Barca rumours
"Borussia Dortmund say I'm 100% staying this summer? I have a contract with BVB so I'll be respectful. The Champions League spot is secured and it was so important to me. I want to play Champions League football," Erling Haaland has told the media, as quoted by Jan Aage Fjortoft.
Barcelona have reportedly ruled out the idea of signing Erling Haaland this summer. Firstly, the Catalans cannot afford the move for now. Secondly, extending Leo Messi's contract is a bigger priority.
However, Barca are aware that, starting with next summer, Haaland will have a €75m release clause and will try to sign him in 2022.
In total, Erling played 41 games for Borussia Dortmund this term, recording 41 goals and 12 assists.
