Former Brentford boss Mark Warburton is another candidate for Rangers

He has won league titles in both Greece and Portrugal

The 43-year-old could leave Olympiacos this summer following disagreements with the club's board over future funding

Rangers managerial target Vitor Pereira is facing the sack from Greek champions Olympiacos.

The Portuguese coach held discussions with the Ibrox club last month, but talks broke down following their failure to win promotion from the Championship.

It's thought that cracks in the relationship between Pereira and the Olympiacos board were already beginning to form over a disagreement about future funding.

Olympiacos boss Vitor Pereira could leave the club this summer and Rangers are monitoring the situation

And it now seems as though his interest in the Rangers job could be the final straw, despite leading the Piraeus outfit to a 12-point title-winning margin over rivals Panathinaikos.

Pereira has been back home in Portugal and, according to reports there, did not appear at a planned meeting with Olympiakos directors on Thursday. The former Porto coach is now expected to hold discussions over the weekend which could lead to his departure.

It remains to be seen whether that will prompt a serious rekindling of Rangers' interest, but Pereira's sudden availability could add a further twist to the continuing hunt.

Mark Warburton, Stuart McCall, Ian Cathro and Alex McLeish are among the other names in the frame. Former Brentford manager Warburton confirmed earlier this week that he had held informal talks with Rangers officials.

Midfielder Kyle Hutton believes Rangers should bring back McCall – despite playing just one game under him at Ibrox before being freed.

The midfielder, 24, was in the starting line-up for the first match of McCall's short-term deal at the helm against Livingston on March 14. Hutton wasn't picked again and is now looking for a new club nearly five years after making his Rangers debut.

Former Brentford manager Mark Warburton is also on the list of potential candidates for Rangers

Gers midfielder Kyle Hutton (right) tussles for possession with Celtic striker Leigh Griffiths (left)

McCall's record as boss was mixed as he recorded just seven wins in 17 games and saw Rangers thumped 6-1 by Motherwell over two legs in the SPFL Premiership play-off final.

But Hutton says McCall drew a positive response from the players he inherited and points to improved results against Hearts and Hibs as proof.

'Obviously the Motherwell games were a big, big disappointment for everybody but, given a bit more time, I think he can be a success,' said Hutton.

'Giving him a chance to recruit his own players would obviously help and he has been quite clear that he has in mind what he would want to do there.

'It's up to the board to decide whether they want Stuart or if they are going to go with someone else but I felt he made an impression on the players when he came in.

'We were better against Hearts and Hibs and while the Motherwell games are what people will remember, I think the schedule caught up with Rangers a little bit there.'