Marveaux says the Magpies have been chasing his signature for some time and he is excited about what he has heard regarding the club's fan base and ambition.
"In January, Newcastle were the very first to contact me. Then, there was Liverpool, and I gave them my consent.
"But I never stated it was already done with the Reds. Then, last Thursday and Friday, there were some changes and I made the decision to sign at Newcastle.
"The medical at Liverpool went off smoothly, I am fit to play and perfectly healthy. Actually, things already established had to be negotiated again.
"So I decided to change my mind and sign with Newcastle, who never gave up. It was not a second choice.
"That club has big impact in England, with a wonderful stadium and amazing fans. The club also has a lot of ambition."