Foster bolstered Albion's goalkeeping ranks in 2023 and having spent the start of the 2023/24 campaign on loan at National League North side Rushall Olympic, he boosted his senior experience by agreeing a 28 day stint at non-league Alvechurch FC in October.
The keeper joined the "Pics" in August for an initial one-month stint at Dales Lane.
The shot-stopper had spent most of his professional career at East Midlands side Derby County prior to signing terms with the Baggies.
Brad made a handful of appearances during his maiden term in B71 during the 2022/23 season, primarily for the U21s in addition to being sporadically involved on first-team matchdays as a third goalkeeper.
The highlight of Foster's opening campaign in the Black Country came in the Birmingham Senior Cup, where several impressive stops helped Albion's PL2 side take their quarter-final tie v Redditch United to penalties.
And Brad proved to be pivotal in the shootout, saving and scoring in the duel to help the club's youngsters progress in the competition.