The Manchester United captain has appealed against his conviction by a Greek court after continually pleading his innocence.
After initially being named in the Three Lions squad for the upcoming Nations League games against Iceland and Denmark, Southgate axed the defender later that day after he was found guilty of all charges.
The 27-year-old was found guilty of bribery, aggravated assault and resisting arrest while on holiday in Mykonos.
But the England boss had another tough decision to make after Maguire phoned to ask to be reinstated to the squad.
It is claimed Southgate was urged by members of his coaching staff to reinstate the defender for Saturday’s trip to Iceland.
But senior FA figures took the opposite stance by insisting that Maguire should not be reinstated.
In the end Southgate opted to leave the United man out of the squad because he felt it was in his best interests.
Ole Gunnar Solskjaer has also allowed him to return late for pre-season training, before their Premier League campaign begins against Crystal Palace on September 19.
Southgate assured Maguire he will be in the squad to face Wales, Belgium and Denmark at Wembley next month.
Maguire is now considered innocent after he was granted an appeal against his convictions and 21-month suspended prison sentence.
It could take up to two years before a retrial takes place, however.
Maguire refused to apologise for his actions, claiming that he only did what anyone else would do in that situation.
It is claimed Maguire got into a brawl when his sister Daisy was allegedly stabbed in the arm with a metal straw.