Jimmy Reilly has resigned as Jersey head coach because of work commitments.
He was appointed in October 2014 and was in charge when Jersey crashed out of their home Island Games at the group stage last year.
"The Jersey FA would like to thank Jimmy for his time and commitment to the role," said CEO Neville Davidson.
"We have one of our regular monthly board meetings next week and there will be no further comment until after that meeting".
One of Reilly's highlights as manager was their Muratti win over island rivals Guernsey in May.
"Unfortunately my work commitments no longer allow me to give the time that would be required to the role and regretfully I have therefore resigned," added Reilly.
"My best wishes go to the players, and whoever the new management team will be for the run up to the 100th Muratti."
Last month, Jersey announced their intention to make a bid to join Uefa and play international football.
BBC Radio Jersey sports editor Tim Pryor:
"The timing of this resignation is interesting, mid-way through the season and with no recent games played, or fixtures on the horizon.
"The 100th Muratti final is still four months away, so there will be time for a new man to come in and shape a squad, but he'll surely need some friendlies before then to get an idea of his best team.
"Like many managers before him, outside the Island Games there were few chances for him to test his squad in competitive or friendly games.
"With the JFA bidding to join Uefa at the moment it's extra-important that they appoint the right man now to potentially lead them into international matches in years to come."