Brentford set-piece coach Keith Andrews is frontrunner for the vacant manager's job at Gtech Community Stadium.
BBC Sport understands the club are not putting a timescale on the appointment, and discussions are progressing well.
The Bees have been looking for a new boss since Thomas Frank left for Tottenham Hotspur this month.
Andrews, 44, was appointed to Brentford's coaching staff in July 2024, after being part of Sheffield United's backroom team. This would be the Irishman's first managerial role.
Between 2020-23, Andrews was assistant manager to Stephen Kenny for the Republic of Ireland, after winning 35 caps for the country.