Hello Walt.
In all cases it's the Chairman, afterall the buck stops there. Invariably though he has them over a barrel. In every job he's ever had he's complained about the size of his squad - performances are never his fault. The Chairman can say 'no, enough is enough' - seemingly what 'Daniel' ultimately did. But in the meantime the Chairman is left to pander to Arry whose no doubt telling him without these squad additions the team will be relegated / won't make the champions league etc.
And the 25 man squad ruling came in when? 2010?