The 28-year-old France international was constantly linked with a move to the Premier League outfit throughout the transfer window but a move failed to happen.
Gomis scored 21 goals for Lyon in 45 appearances last term and was targeted by Newcastle boss Alan Pardew as he looked to bolster his forward options.
Gomis told Canal Plus: "I had a talk with Newcastle's coach and we found an agreement.
"Then there were talks with Lyon. There was a first offer, which was refused, and then a second one, which was accepted.
"Newcastle then came back to me and asked me to make an effort on wages - but I never asked anything as it was my club which wanted to transfer me, so the effort had to be made by Newcastle or Lyon."
"Now I think after what has been said and done, it is not conceivable to talk about any (contract) extension," he added.
