Sol Campbell could be left in limbo until the January transfer window after walking out on Notts County.
Former England defender Campbell has quit County after just one game, with the League Two club confirming he had left "by mutual consent" after asking to cancel his contract.
However, Press Association Sport understands that under FIFA rules, Campbell is highly unlikely to be allowed to join another club having severed his ties with County. As an unattached player, a loan deal would obviously be out of the question.
According to the Premier League, only if the veteran can prove he has a just cause for quitting Meadow Lane - a change of heart or minor disagreement, for example, would not qualify - would he be able to sign for a top-flight team while the window is closed.
Campbell, 35, left Portsmouth in the summer and signed a lucrative five-year deal reportedly worth £40,000 a week at Meadow Lane just a month ago, making his first and only appearance in the defeat by Morecambe last weekend.
Reports on Wednesday morning claimed the centre-half had quickly become disillusioned with the club's rate of progression in that short period.
County chief executive Peter Trembling told the club's official website: "While we are disappointed that Sol felt that he could not adjust to the long-term nature of the project under way at Notts County, we obviously wish him the best with the remainder of his career and hope that he is able to obtain a place where he can play at international level ahead of the 2010 World Cup.
"The investment project is on track; we have brought in a lot of new players and resources into the club, but obviously this is a five-year project, not a five-week one."
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