McLean was at the hub of everything Rangers achieved in the period.
He arrived from Kilmarnock for £65,000 in the summer of 1971 and soon became an established star at Ibrox.
In his first season he took over from Willie Henderson as first-choice right winger helping Rangers to the memorable triumph in Barcelona.
Wonderfully astute and tactically aware, he went on to play influential roles in the capture of the treble in 1976 and 1978.
After retiring in 1982, McLean went on to enjoy successful managerial stints with several Scottish clubs – most notably Motherwell with whom he won the Scottish Cup – before returning to Ibrox to coach Rangers’ under-19 side.