Exit without saving the career, then reload. The player often remains in the squad while the budget resets.
"Boost only specific players, not whole teams, to avoid bugs. Use the trainer mid-season for transfers or contract renewals rather than all at once. Keep multiple save slots in case of crashes or over-edits." fifa+manager+14+money+cheat
Upgrade your stadium early to maximize ticket sales. Exit without saving the career, then reload
Search for top-tier on July 1st of every season. Exit without saving the career
This paper details various methods to manipulate finances in FIFA Manager 14
If you are playing on PC, you can use these alternative methods:
Alt-Tab to Cheat Engine, click the (top left), and select the Manager14.exe process.