Gustav Grubbe has joined Esbjerg fB after four years at his childhood club OB, according to Bold.dk. A four-year agreement has been signed, and Esbjerg fB offered Gustav Grubbe a contract until the summer of 2030. Gustav Grubbe stated that Esbjerg fB's interest in him was not recent, with their first conversation taking place about a year ago. He also mentioned his happiness about finding an early solution, given his expiring contract at OB.

Bold.dk reports that Esbjerg fB has reached an agreement with 23-year-old Gustav Grubbe. The report states he joins on a free transfer from OB and has signed a contract until the summer of 2030. Sports director Sebastian Brydegaard says that they had a lengthy dialogue with the player and are very happy to have completed the deal.

Gustav Grubbe's exit from OB was officially announced on April 17. The 23-year-old Danish central midfielder has wanted more playing time for some time. He stated that it is important for him to achieve his goals and that OB cannot promise him more in the near future. It has also been his wish to leave for some time. Grubbe said he is open to staying in Denmark at a club in either the Danish 1st Division or Superligaen, or to moving abroad. The former Denmark U21 international has 3 caps and has a current market value of €450k, according to Transfermarkt.