NEW CARLTON chief executive Cain Liddle won't make any immediate changes to coach Brendon Bolton's unique employment agreement.

Instead of being contracted to the Blues for a set period of time, Bolton is viewed as a member of staff and is on a rolling contract.

The arrangement was initiated by former Carlton boss Steven Trigg when Bolton was appointed coach in August 2015, to allow the new mentor time to rebuild the Blues without the added pressure of contract speculation. 

It is an unusual agreement within the AFL industry, with Bolton the only coach not to have a locked-in contract.

Trigg also employed the unusual arrangement in his time as Adelaide CEO, placing senior coach Neil Craig on staff in 2011 ahead of what proved his final year in charge. 

Liddle, who took over from Trigg last month, said he had no intention at this stage of moving Bolton to a fixed-term deal in the near future. 

"I think those sorts of decisions are situational to some extent," Liddle told Sportsday radio.

"I can see why that decision would have been made under those circumstances. Brendon and I haven't really spoken about it. What we need to remember is that Brendon is the only coach in the League that doesn't have an expiry date. 

"We think he's a great coach and he's going to coach us a long time into the future. If there comes a time where we need to have a chat [about it], then we certainly will but I think all parties are reasonably happy with how it's situated right now."

Liddle has been in the new role for four weeks, after a gruelling interview process that included five face-to-face meetings, including one two-and-a-half hour session with Carlton chairman Mark LoGiudice.

The former Geelong player has spent the past eight years working at Richmond as the club's chief customer officer. 

During that time the Tigers' membership doubled from 36,000 in 2010 to 75,000 this year.

Liddle said a key focus for him would be to grow Carlton's membership tally, which currently sits at 34,595. The Blues had 50,130 members in 2016, up from 47,305 in 2015. 

"Ultimately what we're going to try and do here is try to build that relationship with our supporters, and build that trust," he said. 

"Right now we're actually 3500 members up from last year…so we're already doing something right.