FearLess Cheat Engine

Hello, I recruited a non-EU player for my team, but can't include him in my team as I already have 3 non-EU players. Tried to change its nationality, but still appears as Non-EU Tried to terminate an old non-EU player, but still appears as NI in game. Any tips/advice on how to integrate in team ? PS...

Save game is a plain sql lite db, very easy to open & edit the requested values...
SQLiteStudio is a portable app...