FMRTE 21 is the latest version of the FMRTE tool, designed to work with Football Manager 2021. It enables users to make changes to the game's data, such as player stats, team squads, league structures, and more.

You can download FMRTE 21 from the official website or other reputable sources. Be cautious when downloading from third-party websites, ensuring you get the tool from a trusted source to avoid any potential malware or viruses.

Unfortunately, I won't be providing a free license key for FMRTE 21. I encourage users to purchase a license key from the official developer or authorized resellers to support the tool's development and ensure they receive updates and official support.