Gignac was all set to sign for the Cottagers last week only for Sunderland to stick their oar in.
"Last Tuesday I was asked by the club to come and talk with my agent. We were told l'OM wanted to sign a forward so they would then be listening to offers for me," he told L'Equipe.
"We were told about Olympiakos and Fulham. I decided to listen to the London side. We went there and immediately we felt their interest was concrete and serious. We were interested. We spent the evening with coach Martin Jol and his wife.
"On Wednesday we had a medical. It was a wonderful welcome. So on Wednesday it was all okay. Fulham agreed with l'OM.
"At 11:30 pm they called me to say I have to go back to Marseille because my forward replacement would not come! I was in London so called to help l'OM sign a forward, but it could not be resolved.
"Three minutes after calling me to come back to Marseille, I was called again as there was an opportunity to go to Sunderland. I could not reply yes to Sunderland and no to Fulham, because l'OM just made the decision of a swap deal with Gyan!
"I've already talked to Didier Deschamps. He knows what I'm thinking. We spoke like two adults without resentment or hostility, even if what happened is not great.
"I have no problem. They couldn't sign a forward, but I am happy to be at Marseille. I know my worth. I will set the record straight. I am not useless as I've read. I have desire to show I am the forward they looked for."