The reign of Giovanni van Bronckhorst at Rangers is one ultimately tinged with sadness. The former Ibrox midfielder answered the club’s call back in 2021 after Steven Gerrard – frustrated with a lack of transfer activity – left for the bright lights of the Premier League. Initially, Gio brought stability as Celtic ambled back to form under Ange Postecoglou. But the January window proved to be a telling one as dodgy Omicron call-offs and a disastrous set of signings cost Rangers the prize of Scottish Premiership glory. Letting slip a seven point lead, ultimately it was league form which cost Gi…