The old 'mutual agreement'.We don’t know yet if it was Munster who 'mutually agreed' Graham Rowntree or if it was the head coach who 'mutually agreed' Munster, but the 53-year-old Englishman’s time at the club has come to an end after five seasons in Limerick.However it came about, the news was certainly a shock in the Irish rugby world.It was only 10 days ago that the former England and Leicester front row cut a defiant figure in his post-match interview after Munster’s URC loss to the Stormers, which came after a heavy defeat to Leinster.There was also no indication that Rowntree (below) was ready to give up the fight after the loss to the Sharks at the weekend and he spoke about their upcoming game against the All Blacks XV."We've got a huge game for the club next," he said."We’ve got guys going into international camps, so this is the last time this group is going to be together for a while so we’ll dust ourselves down and move forward."However, despite the mitigation of injury and the fact that the Sharks unleashed a Springboks pack on their visitors, within all the recent performances, including the round-two loss to Zebre, the team looked disjointed, an incredible amount of basic mistakes and system errors abounded.Things came to a head on Tuesday morning and now head of rugby operations Ian Costello will take interim charge of the team.But the club is on the look-out for a new boss who can get the 2023 URC winners, 12th in the table, out of their rut. MOST LIKELY Mike Prendergast Installed as attack coach in 2022 after spending nine years coaching in France, the former Munster scrum-half looks a likely man to succeed Rowntree.The continuity aspect is obvious, and the 47-year-old is a hugely respected figure