Jason Gillespie has told Sussex supporters they can expect to watch a “positive and aggressive” team next season.

But the incoming head coach is making no promises about immediate promotion.

Gillespie believes Sussex have under-achieved in recent seasons.

He is taking stock of the squad he has inherited from his current base in Adelaide.

And he is looking for an improvement across the board.

Gillespie told The Argus: “I will challenge the boys to get better and do things which will allow us to improve.

“I want us to play really positive and aggressive cricket.

“I try and keep things pretty simple.

“Sussex have probably under-achieved in the last couple of years, certainly with the squad they have.

“I firmly believe there is the opportunity to change that.

“I have seen the post-season review and it underlined a few of my thoughts.

“I want the players to understand the improvements that can be made.

“I certainly think we can up things 10% individually and as a collective.

“If we do that we will be in a pretty good place.”

Gillespie took Yorkshire out of the second tier and to back-to-back titles in the Championship.

He added: “I would love to be able to tell you, ‘We’re going to make division one next year'.

“It won’t be through lack of effort.

“That would be the end result, hopefully, but we need to make sure we follow our plans and our processes.

“The real key word here is improvement.

“I want to see improvement across the board – individuals and the team, not just in the Championship but in the one-day competition and T20s.”