Nottinghamshire's Chairman of Cricket Stuart Foster said: "Mick has done an outstanding job in identifying and persuading top quality players to join Nottinghamshire during the past 12 months.
"Under his leadership the club won the Frizzell County Championship Division Two and gained promotion in the totesport League this year.
"He has further strengthened the squad with the signing of Graeme Swann and Stephen Fleming.
"Mick is totally committed to the success of Nottinghamshire cricket and the club had no hesitation in offering him an extended contract which I am delighted he has accepted."
Newell added: "The 2004 season was an exciting and successful time for the team and myself.
"We view the club?s performance in 2004 as a foundation for further success and we are looking forward to competing in Division One of both leagues next summer.
"In order to be competitive I needed to further strengthen the squad and the signing of Graeme Swann and Stephen Fleming demonstrates our ambition for next season.
"I am grateful for the confidence and support which the club has demonstrated by extending my contract and I am focussed on bringing more trophies back to Trent Bridge during the next two years."
THURSDAY 21 SEPTEMBER 2017
ENGLAND v WEST INDIES