Tired of his prolonged feud with Miley Cyrus, Adam Levine may not come back at all to co-judge "The Voice".

According to Radar Online, the "Animal" singer has threatened to exit the show if Miley reprises the role of co-judge in Season 13.

NBC has recently announced that Gwen Stefani will replace Miley in Season 12 of "The Voice," which will air starting Feb. 13, 2017.

A source reports to RadarOnline that after the announcement of Gwen replacing the "Wrecking Ball" singer in the next season, Adam was thrilled. He is very happy that Gwen will be back and Miley is gone.

The insider further confirmed that Gwen's boyfriend and co-judge Blake Shelton has not been his old self since his girlfriend departed the show.

Earlier this year, Us Weekly also found out from a source on the set that Miley and Adam are totally butting heads on numerous occasions.

According to the source, "They both have short attention spans. They find each other annoying. Adam would get agitated when Miley would interrupt him, and she enjoyed getting under his skin."

As per RadarOnline source, Adam thought Miley is the most obnoxious person ever and Miley's thoughts about Adam are somewhat the same.

"Adam does not really want to return if they bring Miley back. He is that over it."

Both Adam and Blake are veterans in the show and has been working with "The Voice" since the beginning. Now they are considering that it's the right time to exit the show along with Gwen, added the insider.