In a massive boost to the club, Athletic Bilbao has announced that Agirrezabala has signed a five-year contract extension. The talented young player has been a key member of the team, and his commitment to the club is a testament to his dedication and loyalty. With this new deal, Agirrezabala will be a key player for the club for years to come, and fans are thrilled at the prospect of seeing him continue to grow and develop. The contract extension is a significant move for the club, and it’s clear that they are building for the future. As the news broke, fans took to social media to congratulate Agirrezabala and express their excitement for the future. This signing is a major coup for Athletic Bilbao, and it’s a sign that the club is committed to developing and retaining top talent. With Agirrezabala on board, the club is poised for success, and the future looks bright.