Experienced 29 year-old wide midfielder who returned to United in February 2017 on a short term loan deal from National South side St Albans City.
Graeme previously made four appearances for United at the back end of 2010 during a loan spell from Dagenham & Redbridge.
From the Daggers he had spells with Newport, Aldershot and Eastleigh before a lengthy stay with Boreham Wood. From the Wood he moved to Hemel Hempstead before arriving at St Albans in December 2016. Made a goalscoring second debut for United in a 2-2 draw at Weymouth.