Former Rangers midfielder Graham Dorrans believes Brendan Rodgers would likely have guided Celtic to a famous 10th Premiership title in succession if he had stuck around at Parkhead.
Dorrans had a mixed spell at Ibrox between 2017 and 2019 as the Hoops dominated Scottish football with treble after treble upon their rival's return to top-flight action.
Pedro Caixinha started the campaign in charge and Graeme Murty took the caretaker reigns a second time during the 2017/18 campaign before Steven Gerrard's arrival eventually culminated in Rangers' 55th league title last year.
That ended Celtic's bid for 10 under Neil Lennon, after Rodgers had opted to join Leicester City midway through Gerrard's first campaign in Govan.
Dorrans, who sturggled to hold down a regular spot under the now Aston Villa boss, waxed lyrical about Rodgers' impact at Parkhead.
He believes his former side might not have gained enough ground on Celtic to stop them earning the ultimate bragging right, if Leicester City's current boss stayed put.
He told Sportsound: "It was tough. Celtic were ahead of us and if Brendan Rodgers had stuck around at Celtic, I think Rangers would have found it a little bit tougher to stop 10-in-a-row.
"He had a really good team and he's a really good manager, probably the best manager in this country for years.
"I think Graeme Murty was thrown in the first time but I don't think he was the second time and really wanted to keep it. It was a tough time on the pitch, off the pitch.
"Rangers were finding their feet after being out the league for so long, building up to the success under Steven Gerrard."