Rosiak's move to Legia Warsaw is seen as a significant development in Polish football, with the club looking to strengthen its squad ahead of the new season. Legia Warsaw has a rich history of producing talented players, and Rosiak's signing is a boost to the club's hopes of success in the upcoming season.

The decision to reject a contract offer from a top English club like Arsenal is a bold move for a young player like Rosiak. It remains to be seen whether he will make the right choice in choosing to pursue his career in Poland, but one thing is certain – Rosiak is a talented player with a bright future ahead of him.