This summer has been another one of high-profile departures at Rangers. Borna Barisic and John Lundstram swapped Ibrox for Trabzonspor in Turkey. Ryan Jack has gone too. In fact, only three years on from that glorious if short-lived Scottish Premiership triumph under Steven Gerrard, only five players remain. Could that number go down to four before the summer is over? Well, the rumours linking James Tavernier with a departure of his own continue to swirl. According to Yagız Sabuncuoglu – one of the most reliable sources in Turkish football – there is a very real chance that the Ibrox skipper j…