Robbie Williams will rejoin Take That.

The 'Go Gentle' hitmaker has promised that he will work alongside his old bandmates - Gary Barlow, Mark Owen and Howard Donald - again but doesn't think he can make it for the band's 25th anniversary.

He said: ''When is the 25th anniversary? Next year? 2017? I don't know if I can. I have plans, I have a tour, there's stuff to be doing. I don't think it'll be next year but I think it'll be at some point.

''I'm a floating member. And I'm really proud of what we do and what we create when I'm in the band. We'll wait and see when our paths collide but I don't think it's going to be next year.''

And the 42-year-old musician is disappointed that Jason Orange decided to leave the band because it affects the group's ''chemistry'' but appreciates his decision.

He added to The Sun newspaper: ''What did I make of Jason leaving? This line of work is not for everybody and I don't think this line of work is for Jay, for whatever reasons. Whatever reasons they are, they're good reasons and enough for him to act on it and to take himself away from the whole thing.

''And I think that's a shame for Take That because chemistry is chemistry and what the boys have got and what we've got is really special, and when somebody leaves it depletes it. But I think that Jason really has to live Jason's life. What would I like? I'd like for him to be in Take That. But I don't live his life and I just hope he's happy doing whatever it is that he's doing.''