Bullish Andy Walker has ripped apart claims that this is the strongest Rangers squad in years - as he backed Hearts to derail their title bid on Saturday.
Gio van Bronckhorst will look to lead his side to the top of the Scottish Premiership with victory at Tynecastle ahead of Celtic's clash with Motherwell later in the day.
The Dutchman will hope a vital three points kickstarts an upturn in form after some lacklustre showings so far this term, but Hearts boss Robbie Neilson has told his players he expects them to leapfrog the visitors with a win in Gorgie.
Walker has backed the Jambos to pull off a shock in the capital and deal a major blow to the title hopes of the ibrox side. He reckons that Rangers have a number of "frailties" and shut down claims from Van Bronckhorst that the squad was better than last term, with vice-chairman John Bennett also claiming this was the strongest squad in his time at the club.