Pompey Reserves have received a bye through to the group stages of the Premier League Cup.
Jake Wigley’s side were due to visit Doncaster next week for a qualifying round contest at the Keepmoat Stadium.
But with a team withdrawing from the competition, both clubs have now advanced directly to Group D.
They will be joined by Aston Villa and the winners of a qualifier between Cambridge or Exeter, with sides playing each other home and away (date to be confirmed).
The Premier League Cup is a tournament for under-23 teams, although clubs can field three overage outfield players and an overage goalkeeper.
Pompey Reserves are in action at Havant & Waterlooville later this month in the second round of the Hampshire Senior Cup.
Matches against Bournemouth, Bristol Rovers and Plymouth follow in the group stages of the Central League Cup.
Click here for a full list of reserve fixtures, but please note that dates, times and venues are subject to change.