Yorkshire will today announce the capture of two Australians who they expect to underpin their LV= County Championship Division Two promotion bid in 2012.

It is understood that county bosses will unveil Jason Gillespie as their new first-team coach and opening batsman Phil Jaques as an overseas player at a press conference at Headingley.

Paul Farbrace (senior/second team coach), Ian Dews (director of cricket development) and Richard Damms (development manager) are also in line to be appointed.

All four coaches will work under current director of professional cricket Martyn Moxon, and it marks a complete overhaul of the structure employed during the disappointing 2011 campaign when they were relegated from the top tier of the Championship.

Apart from Moxon, Dews is the only man to retain a position from the previous regime, with Craig White, Steve Oldham, Kevin Sharp and John Blain all departing the club.

One of the key questions that will need to be answered at today's press conference is how 36-year-old Gillespie and Moxon will work together. For example: will it be Gillespie who takes the lead in helping Andrew Gale pick the side or will that duty remain with Moxon?

Since retiring as a fast bowler, Gillespie, who spent two seasons as the county's overseas player in 2006 and 2007, has also had coaching spells with Cricket Australia and in the Indian Premier League.

Farbrace, 44, left his position as Kent's director of cricket at the end of September after a difficult season at Canterbury. But the former wicketkeeper has plenty of experience having spent two years as the assistant coach to Trevor Bayliss with Sri Lanka.

He was on the team coach that was famously targeted by terrorists in Lahore in March of 2009.

Dews has been working for Yorkshire since 1996, and was appointed as the club's director of cricket operations when Moxon arrived from Durham in 2007.

Damms has previously worked with the Yorkshire Cricket Board and the county's age-group and Academy teams.

Jaques, who has also had spells with Northamptonshire and most recently Worcestershire, returns to Headingley after five seasons away.

He scored 2,477 runs from 24 Championship matches in 2004 and 2005 at an average of 61.92, including 11 fifties, five hundreds and two double hundreds.

The 32-year-old left-hander, capped 11 times in Tests for his country, also holds a British passport. He is currently playing for New South Wales, although he has missed recent matches due to a hip injury and the death of his British mother.

Ironically, he played in the 2006 Test against Bangladesh in Chittagong when Gillespie scored a career best 201 not out as a night-watchman.

Yorkshire also plan to announce that skipper Gale, England Lions batsman Joe Root and fast bowler Moin Ashraf have all signed new contracts.

The current squad, aside from those on duty with the various England squads, returned to pre-season training earlier this month.