Player transfers refer to the process of moving a professional athlete from one sports team to another. This can occur during specific periods known as transfer windows, which are set by governing bodies like FIFA in soccer. Teams negotiate fees and contracts, and players may also need to agree to personal terms before the transfer is finalized. Transfers can happen for various reasons, including a player's desire for a new challenge, better financial terms, or a team's need to strengthen its roster. The transfer market is a significant aspect of professional sports, influencing team dynamics and fan engagement.