The 24-year-old singer recently attended a mystery audition and has revealed he would walk away from the band is the money was right, reported Daily Star newspaper.
"I thought it was a joke at first. But I know it's probably going to take me out of the band for a little bit. If they offer me millions of pounds, I'd say, 'See ya later, boys'," George said.
There have also been concerns after Nathan Sykes underwent surgery on his haemorrhaging vocal nodule, and band mate Jay McGuiness worries for his future if the group split.