According to Voetbalprimeur.nl, Wouter Goes has extended his contract with AZ until mid-2030. Niels van Duinen stated that extending Wouter's contract was an important priority for AZ this summer. Van Duinen also stated that Goes has become an important player for the club.

Netherlands centre-back Wouter Goes, 22, had stated at the end of May that he was open to a summer transfer. Technical director Niels van Duinen stated in an interview with Noordhollands Dagblad that Goes and Koopmeiners should not expect a transfer. AZ wants to continue with both players and is in talks to extend their contracts. Even if those talks are not successful, Goes and Koopmeiners will not be leaving. Van Duinen said that this is not the right moment for them to transfer and that they are both very important for the club. Goes, who joined AZ in July 2023, has a contract that runs until 2028. The defender has 11 caps for the Netherlands U21 team and a current Transfermarkt market value of €15.00m.