No, for online leagues or leaderboards.
Football Manager 2008 remains a legendary entry in the iconic management simulation franchise. For many players, the thrill of scouting wonderkids, mastering tactics, and climbing the leagues is perfectly complemented by the ultimate real-time editor: FMRTE (Football Manager Real Time Editor).
FMRTE 2008 is a third-party real-time save game editor designed specifically for Sports Interactive's Football Manager 2008. Unlike pre-game editors, FMRTE alters data while the game is running. Key Capabilities
This tool works by reading the memory used by Football Manager 2008.
Ensure your game is updated to the definitive before attempting to run a verified version of FMRTE 2008. How to Safe-Run FMRTE on Modern Windows