Campbell made his League Two debut for Notts County in Saturday's 2-1 defeat at Morecambe but left the club by mutual consent five days later. Notts County director of football Sven-Goran Eriksson admitted he is disappointed by Sol Campbell's decision to quit the club after just one match.
When the signing was announced, Campbell's decision to drop to League Two received a mixed reaction from his former bosses.
Tottenham boss Harry Redknapp, who managed Campbell at Portsmouth, revealed if he had been in charge of any other club than Tottenham he would have attempted to sign him.
"I think he is still a fantastic player," he said.
"In my opinion, he's still in the top six central defenders in the Premier League so for Notts County to get him in that division is incredible."
However, Arsene Wenger, who was Campbell's manager at Arsenal, expressed doubts about how he would handle dropping down a few divisions.
"Time will show if it is a good move for him," he added. "It depends what is in his mind, if it is purely a football move or if it is a long-term move that he wants to be involved afterwards as a coach.
"Maybe it can be a good decision if he wants to build something on the longer term. On the short term, he will suffer a bit because he is used to top-level football.
"When you move down, it is always difficult to cope mentally."
Is this a wise move, or does this show a lack of respect to the club and fans?