Rohl’s Rangers record across all competitions stands at 22 wins, 11 losses and seven draws in 40 fixtures.
Having initially withdrawn from the Rangers running, he had a change of heart and took the job after the club were unable to secure Steven Gerrard or Kevin Muscat.
The German revived Rangers’ fortunes following the reign of Russell Martin, turning the team from mid-table stragglers to title contenders.
However, Rangers wilted post-split as a run of four straight defeats in their final five games wrecked hopes of a first Premiership crown in five years.
Being eliminated from both domestic cups by Old Firm rivals Celtic further heightened fans’ frustrations and turned up the pressure on Rohl.
However, Cavenagh – whose American consortium took control a year ago – moved to quell speculation over the head coach’s future last month amid reported interest from Wolfsburg and vowed Rohl would oversee a “summer of substantial change”.
Rohl was given funds to bring in four players in January, while Shankland was lured from Hearts last month as a squad reshape beckoned in his first summer in charge.
However, that will now fall to McInnes, with Rangers having wasted no time in their manager hunt with the squad scheduled to return to training this week.
Rangers will enter the Europa League at the third qualifying round stage, a few days after their Premiership opener on the weekend of 1/2 August.
