The draw for the last 16 of the Premier Sports Cup will be made at Tynecastle on Sunday July 25.
It will be broadcast live on Premier Sports following their coverage of Heart of Midlothian v Inverness Caledonian Thistle, kick-off 5.15pm.
The eight seeded clubs in the draw will be Rangers, Celtic, Hibernian, Aberdeen and current holders St Johnstone, plus the three group winners with the best records.
Ties are scheduled for the weekend of August 14/15 and are subject to TV selections.
