The 'Candy' hitmaker had reportedly roped in the Oscar-winning singer for a collaboration on his upcoming second album, reported Digital Spy.
"She and my wife, Ayda, are really good friends and I'm really good friends with Simon (Konecki), her boyfriend. We're good pals, but I wouldn't ask Adele to sing on my record.
"The whole world wants Adele to sing on their record. I think we'll just leave it as a nice friendship, so that story about a duet is totally made up," he said.
"I can tell you that Mr Michael Buble is on the album. Me and Michael on the same record, I'm so excited! We're going to record a song I've written and graciously, he thinks it's a good tune too and wants to be on it... I am a big fan girl of him.
"He's quite a presence. I'm a pop star, I've got a 'character' and a 'personality' and all that but when he comes into the studio, I stand back and just enjoy him being him," he said.