However, Spurs manager Hoddle today told the London Evening Standard he was optimistic that the free transfer move would still go ahead.
Hoddle stated: 'I can't say for sure, because it is far from clear, but it might happen. It might be done and dusted today'.
Such a move would make Anderton the highest paid player in Portsmouth's history.
Anderton initially signed for Portsmouth as a trainee in 1990 and made 77 apperances before signing for the North London side for £1.75 million in the summer of 1992. He went on to become an England regular under Terry Venables and Glenn Hoddle, but injuries have blighted his career since.