Peter Golds, leader of Tower Hamlets Conservative group, is understood to have referred to the committee Lutfur Rahman Ali's appointment in July to the£125,000-a-year post following concerns about his late addition to the candidate list and CV details.
Cllr Golds has declined to comment to LGC over the issue and a Tower Hamlets spokeswoman refused to give precise details of the allegations.
However, she said that the preliminary hearing, which will take place behind closed doors, would be presided over by a non-councillor and independent member of the committee, Patrick OÕConnor.
The hearing can decide whether the complaint deserves further investigation by the committee itself or the Standards Board for England - or if the allegations can be dismissed as groundless.
After Tower Hamlets' appointments committee voted by four to three to hire Mr Rahman Ali, a statement from the council insisted he had been selected after an "objective and rigorous" process.
Mr Rahman Ali is a former head of diversity policy at the London Fire & Emergency Planning Authority.
He is not related to Tower Hamlets leader Lutfur Rahman (Lab), who sits on the appointments sub committee.