Brian Rose will stand down as director of cricket at Somerset at the end of the 2012 season.
Rose has held the position at Taunton's County Ground for the past eight seasons, having also served the club as a player and captain.
But Somerset have announced this afternoon that Rose will leave his position at the conclusion of the summer season, by mutual agreement.
The 62-year-old said 'a new and fresh approach' was needed for Somerset's first team, but he added that he would still be available to assist the club in a lesser capacity next season.
“I have had immense pride in overseeing the development of Somerset cricket over the last eight seasons as director of cricket," said Rose in a statement posted on the county's official website.
"Our progress in that time from the age groups through to the First Team has been outstanding with teams competing at the highest levels across the board.
"The cricket played by our teams has been highly attractive to watch and is reflected by the fantastic support from members and supporters.
"I also take a lot of pride in the development of the talented young cricketers that are now representing England, England Lions and England U19s.
“After the result at the SWALEC stadium and another defeat on Finals Day, I have come to the conclusion that a new and fresh approach is needed at First Team level.
"I will continue to try and assist the club in meeting its core objective of winning trophies."
Somerset chairman Andy Nash said: “Brian has uniquely served the club with great distinction as a player, captain and latterly as the director of cricket.
"He remains the club’s most successful captain, winning five trophies, and since 2004 has transformed the performance of the First Team, taking them from the bottom of the second division to one of the most consistent and competitive sides in all three competitions.
"He has also overseen substantial and lasting improvements in our age groups, player’s pathway and Academy which has resulted in the development of abundant young talent, many of whom have achieved First Team contracts and international honours.
“We are delighted that he has offered to provide ongoing advice next year which will allow us to draw on his immense knowledge and understanding of the game.
"This decision provides the club with the opportunity to take stock and ensure we are effectively positioned for the 2013 season.”