Sébastien Haller joined Leganés on a season-long loan on August 31, a move that surprised many observers, as he was seeking regular playing time following a challenging season at Borussia Dortmund. Although he was a high-profile player initially brought in by Borussia Dortmund to fill the void left by Erling Haaland, his performances have not lived up to expectations in Spain. Leganés, a mid-table club in La Liga, hopes that he will be able to regain his form. His arrival garnered attention due to his previous experiences in France, the Netherlands, England, and Germany.

Sébastien Haller has joined Leganés.

Sébastien Haller has been loaned to Leganés in a historic signing for the club. Haller, who was to replace Erling Haaland at Borussia Dortmund, faced health challenges after being diagnosed with malignant testicular cancer. Despite returning to play, he did not meet expectations. The transfer, costing Leganés 2.5 million euros, was kept secret until confirmation. If Leganés stays in the top division, they may have to pay more to cover Haller's full salary.

Haller has transferred to Leganés in a last-minute deal. Dortmund's sporting director Sebastian Kehl mentioned that the transfer was completed within two and a half hours with the help of Lars Ricken. Haller wanted to seize the opportunity to play in La Liga. This transfer allows Dortmund to save a significant portion of Haller's large salary, approximately 10 million euros per year.