Ex-Celtic striker Simon Donnelly has leapt to the defence of Rangers Academy graduate Nathan Patterson. The young Scotland international right-back, 22, has come under fire from his own Tartan Army “fans” in the wake of the nation’s poor run of form. Scotland succumbed to a 1-0 Hampden defeat against a spirited Northern Ireland side with Everton right-back Nathan Patterson gifting Liverpool counterpart Connor Bradley the ball before the teenager bent home the eventual winner. This is after Patterson played 73 minutes in Scotland’s 4-0 hammering at the hands of the Netherlands. It’s a situation…