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

It is understood that Jason Gillespie will be unveiled as their new first-team coach and opening batsman Phil Jaques as their latest overseas player at a Headingley press conference.

Paul Farbrace (senior second-team coach), Ian Dews (director of cricket development) and Richard Damms (development manager) are also expected to be unveiled.

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.

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 leaving the club.

One of the key questions that will be asked today is how 36-year-old Gillespie and Moxon will work together. Will it be Gillespie who takes the lead in helping Andrew Gale pick the side or will that duty remain with Moxon?

Gillespie, the county’s overseas fast bowler in 2006 and 2007, is the current coach of the Mid West Rhinos in Zimbabwe.

Farbrace, 44, resigned as Kent’s director of cricket in September after a difficult season at Canterbury. But he has plenty of experience, having spent two years as Trevor Bayliss’s assistant with Sri Lanka.

Dews has been working for Yorkshire since 1996 and was appointed as their 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 five hundreds and two double hundreds.

The left-hander, 32, capped 11 times in Tests for his country, also holds a British passport through parentage.

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