CARLTON champion Greg Williams is back with the Blues.

AFL.com.au understands the dual Brownlow medallist has accepted an invitation from co-captain Patrick Cripps and emerging onballer Paddy Dow to provide personalised coaching.

Williams is one of the club's most decorated players and a Team of the Century member. This will be his first role with the playing group since his specialist training role in the early 2000s.

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While plans to work with Cripps and Dow are in their infancy, the 1995 premiership player spent Friday at Ikon Park and is expected to be used semi-regularly throughout 2019.  

The approach from Cripps came after several conversations with Williams in recent years with the one-on-one education to be formalised in coming weeks.  

When Cripps arranged to meet with Williams he was also greeted by 2017 NAB AFL Draft No.3 pick Dow, who has high aspirations to increase his output in his second AFL season.  

Williams will only be providing teaching to Cripps and Dow and will not be part of the official coaching panel, with his nous to be used in conjunction with midfield coaches John Barker and Cameron Bruce.  

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His training is expected to include specific kicking and handballing skills, stoppage work and identification of roles within gameplans.  

Dow has also reached out to former AFL assistant coach David Newett to improve his kicking in weekly sessions in his time away from the Blues.  

Part of a nucleus of young Blues midfielders, Dow has also leant heavily on the feedback from former captain Marc Murphy, who has also taken Sam Walsh and Sam Petrevski-Seton under his wing.  

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Williams' appointment makes him one of several club legends involved in the Blues' rebuild, with former captain Chris Judd now football director and premiership coach Robert Walls in a coaching advisory role.

It comes as Williams continues to consult a number of star midfielders across the competition.  

The former Cat, Swan and Blue has assumed a part-time mentoring position with Brisbane recruit Lachie Neale which is already reaping benefits.

He has also previously transformed Tom Mitchell into a Brownlow medallist, while working in the past with former Essendon captain Jobe Watson and the Bombers' midfield group.