The recording artist, who is now 35, quit the 1990s boy band in 1995. The group broke up the following year, but got back together without Williams in 2006. Williams is in talks to start collaborating with the band again, the BBC said Friday.
"We've matured now. We'd have a laugh," the singer told The Daily Mirror at the opening night of the stage musical "We Will Rock You" in Manchester.
"The lads seem up for it and some people think it's a done deal," Williams said. "Let's see what happens, but my head's in the right place so the timing could be right if Gary (Barlow) calls. I think it would be fun."
The BBC quoted Williams as saying he is in "regular contact" with his Take That brethren and a reunion is "looking more likely by the week."