Former West Ham manager Alan Curbishley insists he bears no animosity towards the club but could not continue working under the current set-up.
Curbishley stepped down last week citing interference from the board over transfer policy and the deadline day sale of George McCartney, for financial reasons, to Sunderland proved the final straw for Curbishley.
"I was firmly against George going, after being told no-one else had to leave," Curbishley told Sky Sports' Goals on Sunday programme. "If George left and players came in on loan I'd be condoning it and I wasn't going to condone what was going on."
West Ham rejected Curbishley's claims that the club's decisions on players represented a "breach of trust and confidence".
Vice chairman Asgeir Fridgeirsson has insisted Curbishley was fully aware of the transfer budget.
But Curbishley felt his power was being eroded while he still had to bear all the criticism for performances.
He said: "I just felt what was happening was things were going on which I wasn't agreeing to. I firmly stood my corner but it didn't make any difference.
"I bear no animosity to the club, the team, the players. I want them to do well. I am a West Ham boy and was privileged to become manager there.
"I felt if if you are going to be responsible for performances and results, they have got to be your players out there. I just felt the way it was turning out, that wasn't happening."
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