Northern Ireland will play their final match against Poland in Sevio on Friday, May
The match will start at 19:00 in North Belfast next month.
Tanya Okstobi last played for Sevio, the Crusader’s Crusader home in the Premier League, in October 2023 when they drew 1-1 with Hungary.
Stuart Mclarense assistant Oxistop will be without assistant assistant after being announced after beating Romania 1-0 at Windsor Park on Tuesday.
The Scotland coach joined the rear room staff in early 2024 but leaves to play a new role with FIFA and works closely with the Football Association as a talented coach.
“This is an exciting role and a big opportunity, but, naturally, I’m sad to leave Northern Ireland,” McLaren said.
“During my time, I have seen a real cooperation throughout all parts of the organization of higher women. There is a clarity and a structure.
Northern Ireland is second in Group B1, seven points from four games.
They are three points clear at the top of Poland and drew 1-1 with Bosenia and Herzegovina earlier this week.
The NI ends on Tuesday, June 3, 2013 in Zenica on Saturday.