Paulo Sousa admitted after Queens Park Rangers' draw with Crystal Palace that Dexter Blackstock was loaned to Nottingham Forest without his knowledge.
Blackstock, QPR's leading scorer this season, linked up with Forest last week after a decision apparently taken by owner Flavio Briatore.
Sousa explained: "I gave the players two days off after the Bristol City game and when I came back Mr Paladini (Gianni Paladini - sporting director) told me he had an agreement (for Blackstock) to go on loan.
"It is a decision for the board and only they can answer it. I'm not frustrated, I said from the first day I have to adapt and try to do my best with the players I have."
QPR missed Blackstock against Palace as their already faint play-off hopes suffered another blow with two dropped points.
Sousa was sent to the stands at the end of the first half when he lost his temper at the way Palace defender Claude Davis appeared to foul Samuel Di Carmine.
Sousa was not happy with referee Scott Mathieson for banishing him, adding: "I can't understand when a manager is looking out for his player, I care about my players and I went to see him, and I am sent to the stands.
"I said nothing to the referee, I was going to see my player. I think it was because I went out of my area."
Palace boss Neil Warnock, known for his fiery personality, adopted the unusual role of peacemaker and had sympathy for his opposite number.
"I told him to calm down a bit," smiled Warnock.
"To be fair he didn't do much - he was concerned about his lad who had blood coming out of his nose.
"If he wants me to speak for him I will do - I know everyone on the commission.
Warnock added: "If we were a bit more clinical we might have finished it off but a draw was probably a fair result."