Having led City’s women’s team since its reformation in 2014, the 35-year-old has enjoyed a silverware-laden tenure, guiding his side to six trophies in as many years with three Continental Cup successes, two FA Cup triumphs and one FA Women’s Super League title.
Cushing also led the team to the Women’s Champions League semi-finals in consecutive seasons (2016-17 and 2017-18), and leaves the Cityzens competing on three fronts during the remainder of the 2019/20 campaign.
His links with Manchester City go back as far as 2007. Having started out as a schools coach, before joining the Academy’s coaching set-up, Cushing’s professional journey within the City Football Group now continues across the Atlantic.
In his new role, he will link up with MLS outfit New York City where he will work alongside newly-appointed head coach Ronny Deila.
His final game in charge will be the team’s Barclays FA Women’s Super League home clash with Arsenal on Sunday 2 February.
Speaking about his move, Cushing said: "I would like to thank City Football Group and Manchester City for giving me the opportunity to manage our women’s team for the past six years.
“Making the decision to leave MCWFC has been incredibly difficult given the fantastic players and staff that we have here and the incredible success that we have achieved together - it isn’t one that I have taken lightly.
“We’ve had an amazing six-and-a-half seasons and I have thoroughly enjoyed working with everybody – I will be extremely emotional to leave, but I’m very excited for my next role within the City Football Group.
“Linking up with New York City and Ronny (Deila) is a brilliant opportunity and I’m really looking forward to working in the MLS.”
Head of Women’s Football, Gavin Makel added: “On behalf of everybody at the club, I would like to pass on my gratitude and thanks to Nick for his dedication to Manchester City Women over the past six years and to Manchester City as a whole beyond that time.
“MCWFC was a journey that we began together and what he has achieved as a manager during his time in charge is unrivalled in the women’s game.
“He will be missed, but everybody here is thrilled for him and this exciting new venture within the City Football Group.”
Following Cushing’s departure, current assistant manager Alan Mahon will take charge of first team matters in the interim period, with former England men's Under-21s coach Brian Eastick providing a supporting role, bringing with him over 30 years of experience both on and off the pitch.