The draw for the fourth round of the IRN-BRU Cup will be made at Oriam, Scotland's Sports Performance Centre, on Tuesday September 6 at 12 noon.
Former Celtic and Wales striker John Hartson will be joined by a Scottish football supporter to conduct the draw, which will be streamed live on Periscope via @irnbrufootball.
The 12 third-round winners will be joined in the last 16 by the top two clubs from Northern Ireland and Wales last season - Crusaders, Linfield, The New Saints and Bala Town.
Fourth-round ties are due to be played on the weekend of October 8/9.
