Institute were due to play Linfield in the League Cup at Windsor Park this evening but the Northern Ireland Football League have postponed the fixture after Stute fielded an ineligible player in the previous round.
The Derry side beat the PSNI in the second round but the league say an Institute player had already plaedy in the first round with a different team.
Just last month Larne were thrown out of the League Cup after they were found to have used an ineligible player in their second-round win over Limavady United.
Institute could face similar punishment.
