Leeds United owner Andrea Radrizzani felt "ashamed" to pull the plug on a "done deal" for Raphinha to join Chelsea and says only time will tell if Barcelona will pay up for the winger.
Raphinha left Elland Road to join Barca for a reported fee of €67million (£57m) last month.
Chelsea thought the Brazil international was on his way to Stamford Bridge after reaching an agreement with their Premier League rivals.
Radrizzani was embarrassed to inform Blues owner Todd Boehly that the deal was off, but says he had no choice.
He told The Athletic: "For me, it was done, the deal with Chelsea. When I have a deal, my word is my word and I felt ashamed to go back to Todd Boehly, the owner of Chelsea, and change the position.
"It was really for me, disrespectful and not the right thing to do, but I didn't have a choice.
"If I could decide to not sell the player, I would have preferred that. But I didn't have a choice because for us it was more important to buy six players than keep Raphinha."
Radrizzani confirmed London rivals Tottenham and Arsenal also wanted Raphinha.
He added: "Obviously we had interest from Tottenham, from Arsenal, from Chelsea and from Barcelona. So all of these clubs and the best deal we agreed was with Chelsea.
"Then at the end the deal that came up with Barcelona is pretty much the same for the way we structured it at the very end, but it took time, it was hard. We had to manage well and as I said, I'd rather not sell him, but I didn't have a choice because we had to buy six players."
Eyebrows have been raised over Barca's spending in this transfer window given they had to let Lionel Messi leave 12 months ago due to a financial crisis.
Radrizzani says only time will tell if the LaLiga giants stump up the cash they have agreed to pay Leeds for Raphinha and vowed to take action if they do not.
Asked if he is confident Leeds will get the money from Barca, the Italian replied: "Look, I'll tell you on the 2nd of September. If not we will have a global case on all media in the world about Barcelona. So I don't know."
