The club are also delighted to announce that an anonymous sponsor is to fund the players` wages and expenses until the end of the 2017/18 campaign.
Anderson arrives back at the Swansway following his recent release from league rivals Torquay United – having been on loan with the Blues since November.
He was a pivotal part of Gulls’ escape from the drop last season and made seven appearances this term for the Devon-based outfit.
He was then snapped up on a temporary basis by Marcus Bignot, impressing in his two starts in December against Solihull Moors and AFC Fylde in the Buildbase FA Trophy – the Blues victorious in both games.
A concussion injury has made it a frustrating couple of months for Anderson – but he has shown the Blues faithful his defensive ability in the games which he featured.
Starting his career at Leyton Orient, the centre-back then moved on to Aberdeen.
He has also had spells in Italy with Monza and Chievo.