Kenny Black has been sacked from his role as Motherwell assistant manager.
The 51-year-old had been in place since 2011 but was unsure of his future when Stuart McCall resigned in November.
Black was unsuccessful in his attempts to become the Fir Park side's new manager and had agreed to assist new boss Ian Baraclough until the summer.
"I felt it would be a good time to change things and that a freshness and something different in that role might help us," said Baraclough.
"The club is heading in an exciting new direction both on and off the park and we'll make further announcements in due course.
"I can have no complaints about Kenny's professionalism or work since my arrival late last year."
Black, a former Motherwell player, was one of five candidates interviewed for the manager's position after the departure of McCall, with former Scunthorpe United manager Baraclough getting the nod.
"I understand how football works and accept today's decision," Black told Motherwell's website.
"The manager spoke with me earlier this afternoon and everything was and is amicable.
"I want to thank Motherwell for the four great years we've had together and wish them and the people at Fir Park every success."
The club say they want to appoint a replacement "swiftly".