The full-back joined the League Two side Shrimps last August and went on to make 28 senior appearances during the first half of the season.
The 20-year-old has made the temporary move to nearby Salford to continue his development and gain more invaluable experience of first-team football.
Everyone at United wishes George good luck for the rest of the campaign at the Peninsula Stadium.
Ethan Hamilton (Bolton Wanderers), Alex Fojticek and Max Taylor (both Stalybridge Celtic) agreed fresh moves earlier this month, although Fojticek had already been with the non-league side.
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