Bannister joined the Harriers at the end of August 2017 having been snapped up by Premier League side Watford for the previous season.
The 20-year-old initially came through the youth ranks at Aston Villa and became a member of their under-23 squad before being released.
He spent part of his Watford season on loan to Shrewsbury Town
Bannister has already trained with Moors and will be in contention for tomorrow’s visit to high flying Dover Athletic