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.