|8/1||Newcastle are 8/1 with Paddy Power to be relegated|
The former Lyon and Marseille player has been frozen out of the Newcastle first team since April amid reports of a rift with manager Alan Pardew.
And the 27-year-old thanked the Magpies fans in an open letter, but said his move to Steve Bruce's side has given him a chance to get his career back on track.
"To the Toon Army I want to pass on my thanks to all the fans that supported me during my time at the club and living in a city that will be forever in my heart," the letter, published by the Evening Chronicle, read.
"Thank you also to everyone at NUFC and to Hull for making this loan happen.
"I wish Newcastle the best of luck. I hope they have a good season.
"I can't wait to launch my career again with Hull and Steve Bruce. I thank him for the trust he has shown in me bringing me to this club."
Ben Arfa, who scored 14 goals in 86 appearances for Newcastle, ended the letter: "Howay the lads."
The France international could make his Hull debut against West Ham in 12 days' time but will be ineligible for the trip to Newcastle five days later.