Stephen O'Neill has left Mickey Harte's Tyrone football management team.
O'Neill was appointed as forwards coach for the start of the 2018 campaign but he will not return to the role for the 2020 season.
He becomes the second member of the management team to depart after Peter Donnelly took up a strength and conditioning role with Ulster Rugby.
"The management of Tyrone GAA wish to place on record their sincere gratitude and thanks to Stephen O'Neill for his sterling commitment and service shown to the Tyrone senior football team over the past 12 months," a Tyrone statement read.
"Stephen had informed the senior manager Mickey Harte over the weekend of his decision to step down as the team's forwards coach. Stephen had also cascaded the message to all of the players in the panel.
"Stephen had taken on the role initially for a one year period and he had fulfilled that position to the best of his ability during that period."
Tyrone's summer ended in disappointed nine days ago when they were beaten in the All-Ireland SFC semi-final by Kerry.