Rangers managerial merry go round set to begin after Danny Rohl agrees move.Rangers are closing in on the appointment of Hearts head coach Derek McInnes as their new boss after a deal was agreed for Danny Rohl to join RB Salzburg.According to a report from Italian journalist Fabrizio Romano, Rohl’s eight-month stint at Rangers is set to come to a premature end, with the German boss having sealed a deal that will see him join Austrian Bundesliga club RB Salzburg.The two clubs have been locked in negotiations over a deal for the 37-year-old over the last 72 hours after RB Salzburg identified Rohl as the man they want to oversee a summer overhaul, with the club having missed out on Champions League qualification after a disappointing third-place finish last season. It is understood that Rangers will receive a seven-figure fee for the head coach.Rohl is set to leave Rangers for RB Salzburg in Austria…