Robbie Williams may only release two more albums.
The singer's manager Tim Clark revealed the British star hasn't decided what he will do once he has fulfilled the requirements of his record deal with EMI.
Clark said: "Robbie's got a Best Of to come on his contract after releasing a new album this year. He will then look to his future. We will engage with a range of people and Robbie will have his ideas."
Rumours have been flying over the last few months about a possible reunion between Robbie and his former Take That bandmates.
Clark, however, insists that while Robbie may take to the stage with the group - Gary Barlow, Mark Owen, Howard Donald and Jason Orange - for a live show, he will never return permanently.
Clark said: "They are all great friends again. Whether Robbie pops up at Wembley Stadium is up to him. But he is not going to become a full-time member."
Robbie left Take That in 1995, with the band splitting a few months later.
The group reunited in 2005 but the 'No Regrets' star turned down the chance to take part in the reformation.