Pundit Kenny Miller reckons Rangers 4-0 defeat to bitter rivals Celtic has been in the post.

Ange Postecoglou's team scored three in a rampant first half with a Jota strike sandwiched by a Liel Abada double. The second 45 was more even but a fourth was gifted to David Turnbull after a Jon McLaughlin howler.

Miller dismissed emotional post-match reaction that suggested Rangers are miles off their rival's pace, pointing to last season's improved performances after a similar February shellacking at Parkhead.

But he's in no doubt the Ibrox club are yet to find their level this season and yesterday's game needs to be a dramatic wake-up call.

He told the Daily Record: "Knee-jerk reactions are easy after a 4-0 Old Firm annihilation. And make no mistake, that’s what we witnessed at Parkhead yesterday. But for Rangers, this wasn’t just about losing to Celtic in a one-off league game.

"The truth is, that’s a result that’s been coming for Giovanni van Bronckhorst ’s team. Last season, his players showed they can compete with Celtic. Even after the 3-0 battering they got in February, they responded, especially when they beat Celts in the Scottish Cup semi-final at Hampden.

"The next three derby games were a draw and a win apiece. So don’t tell me this team suddenly are not good enough to go up against manager Ange Postecoglou’s Celtic team. That’s an over-reaction. Sweeping statements like that are wide of the mark. But so far this season? Rangers have been nowhere near the level they need to be at. I’ve been saying it for weeks.

"And that’s why a result like yesterday was always on the cards. This has to serve as a major wake-up call to Rangers. On the day, they were miles off it – in every department."