Broadcaster Simon Jordan reckons Rangers are missing the X-factor of former boss Steven Gerrard in the wake of their 3-0 trouncing against Celtic.
The former Crystal Palace owner has been an outspoken backer of Ange Postecoglou and admits he has reservations over Gio van Bronckhorst.
Those fears were heightened after Reo Hatate and Liel Abada put Rangers to the sword en route to Celtic leapfrogging their rivals at the Premiership summit.
And Jordan has told the Ibrox side it's now or never to rediscover their mojo, as he reckons a Celtic title win will be be a body blow both on and off the park.
Speaking on talkSPORT, he said: "These are very interesting times and there's some jeopardy in the mix of this.
"If Celtic are able to get it back and win the league, they go into the Champions League and they get £35m, more money straight out the gate than Rangers.
"This a very interesting time, I think financially, Celtic are better set than Rangers as a matter of course, I think the financial situation behind the scenes, despite the arrival of Ramsey, is slightly different.
"Rangers don't need this to be compounded, all of a sudden Celtic get an extra £35m in revenue in, the shareholders are not going to pocket that, they are going to reinvest that into the team.
"Celtic will get an opportunity to kick on again.
"So it's important that Rangers grasp the nettle and regain their poise.
"I was always worried, because I think a large degree of this particular set of circumstances were about Steven Gerrard's passion and his ability to get players up and facing the right way and focused.
"I'm not so sure your Dutchman there has the same credentials.
"i had reservations, I was underwhelmed by his appointment, he's come in, he's done OK, figures were trotted out that he was the first Rangers manager to win whatever it was.
"I look at now and I think 'hmm, let's see'."
