Nodes represent clubs, and colors represent the leagues/countries where the clubs are based. Link widths represent transfer frequencies between clubs. It can be observed that transfers mainly occur within leagues. However, the most prominent clubs (nodes closest to the center in the graph) have comprehensive talent networks spanning different leagues, ensuring a rich talent pool. The breadth of a club's talent network can serve as a measure of its talent reservoir. The graph illustrates talent transfer relationships between clubs (e.g., Borussia Dortmund being a major talent source for Bayern Munich).