Inheriting a struggling Roos side in mid-2016, the former Richmond midfielder has led Clarence to finals on all but one occasion, with a top-three spot all but locked in for 2021.

The 33-year-old said several factors had played a part in his decision.

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"One is family - I've got a really young family and a wife and I just think I've been an assistant coach or playing AFL for 12 years - I just feel like I need to give them some time," Webberley said.

"Two, I've started the rebuild a couple of years ago, I've got the club to where I think it's ready to strike and I think it's important that the next coach is here for a period of time.

"I think they're going to see some success over the next three or four years and I think it's really important for the coach to take them through that next phase because the reality is I don't think I'd be able to last for another three or four years.

"Lastly ...I feel like I want to have a year of just playing footy and getting back to the enjoyment of playing and training and re-connecting with the playing group.

"I think deep down I know it's the right thing for the club and the playing group moving forward."

A flag-winner and TSL player of the year in 2009, Webberley re-joined the Roos from Richmond in 2013.

He hopes to continue on into an 11^th TSL season next year as a player, but said he understood if his successor wanted clean air.

Webberley said he was proud to have invested in the club's youth stocks during his tenure as coach.

"I think that's the one thing I can look back on and say that I did well, is that I changed tack a little bit and really invested in the juniors coming through," he said.

"Yes I've recruited a couple of guys this year, but I think the reality is 90 per cent of your TSL list needs to be made up of your development zone and talent pool coming through your junior ranks.

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"[Glenorchy coach Paul Kennedy] said the other day that 19 players who beat North Launceston at UTAS the other day were part of the 3-15 group in 2019, and it just goes to show if you invest in your young talent and give them opportunity you're going to get the rewards.

"I think the platform's there and there's no ceiling on what this group can do.

"I truly believe they can win the premiership this year, and if they don't win it this year I think the next few years - as long as there's the correct system in place - they're going to be extremely successful."