Barcelona president Joan Laporta and sporting director Deco are reportedly interested in signing Haaland, who has been one of the top strikers in the world for several years.

Lewandowski's contract expires next summer, and at 37 years old, he may choose to leave the team as a free agent, allowing Barcelona to sign a new, high-profile forward.

Last season, Haaland scored 22 Premier League goals despite Manchester City finishing third in the league. Hamann spoke about the potential move in an interview, saying that Barcelona may face challenges registering Haaland due to their financial struggles.

However, Hamann notes that Barcelona's La Liga rivals may find it easier to score goals as they get older, compared to the Bundesliga or Premier League.

Haaland has won two Premier League titles and a Champions League under Manchester City manager Pep Guardiola, and may consider a move to La Liga if Barcelona make a serious bid. However, the transfer fee would likely be over £100 million, which could be a challenge for Barcelona given their current financial situation.

Hamann suggests that Haaland could be a good short-term solution for Barcelona, who could use him as a stopgap until they can resolve their financial issues and attract a new, long-term striker.