Rangers complete first signing of the Derek McInnes era at Ibrox.Rangers are set to complete the first signing of the Derek McInnes era at Ibrox after agreeing a deal that will see former academy product Ross McCrorie return to the club on a long-term deal from Bristol City.The Glasgow giants, who formally introduced McInnes to the media on Thursday afternoon, are reported to have finalised a deal that will see the versatile defender rejoin Rangers on a three-year contract, almost six years after he left the club for Aberdeen.According to a report from the Rangers Review, the club fought off competition from several clubs in England to convince the Scotland international to return to the club this summer. The club are said to have agreed a fee of around £900,000, with add-ons included in the deal that could see that fee rise in the future.McCrorie will pen a three year deal to return to Rangers this summer…