Coventry City Chairman Ken Dulieu has said that the Board are fuming over Marlon King’s decision to sign for Birmingham City.
Speaking to the club website, Mr Dulieu said: "We are fuming about this and feel we have been betrayed. We had reached agreement with Marlon and his advisor and verbally everything was settled and agreed, and now we find out that a deal has been done with Birmingham.
"The club and our supporters have fully backed Marlon on his return to the game and I think we deserve better than this. We have shown great faith in him, helped him rebuild his career and were delighted that he was due to continue playing for us.
“To hear that he has now changed his mind and gone back on what had been agreed, is very hard to take.
"News of his decision to sign a new contract with us leaked out, and that is why we had to publicly confirm the verbal agreement.
"We would have preferred all the formalities to be completed, but we had no choice. I really feel for supporters."