Obertan is eager to face his old club following his summer transfer.
He told the Evening Chronicle: "It'll be a great feeling to be back at Old Trafford - hopefully we'll win there.
"I spent two amazing years there, so it'll be great to be on the pitch at Old Trafford again, to go back there and see friends I was with for two years.
"Hopefully, we'll get a good result there - it would be really, really good.
"It's all about Newcastle getting a good result now."