Dujon Sterling should be tasked with 'sorting out' Callum McGregor for Rangers this weekend.

The teams will meet in a do-or-die Old Firm clash on Saturday lunchtime at Parkhead.

The result will likely go a long way to determining the outcome of the Premiership title race, with the Hoops currently three points ahead of their city rivals.

Celtic skipper McGregor is usually a key figure in these games, as he's proven in the past that if he can dictate big games then positive results usually follow for the club.

So, former Rangers player and manager Stuart McCall would like to see his old team put the energetic Sterling up against him in an old-fashioned man-marking job.

He told BBC's Scottish Football Podcast: “If, like people were saying, McGregor was back to his best for Celtic, apparently, and pulling the strings.

"I’d like to see somebody to go and sort him out and, for me, Sterling can do that. He can go and play and sit on somebody who’s going to try to dictate the tempo of the game.

"But normally that’s a Cantwell or Lawrence who’s going to sit on a deeper midfielder.”

READ MORE: First Rangers transfer of the summer could be done in 'next few days'

Meanwhile, a permanent move for Oscar Cortes could be finalised by Rangers this week, according to a report.

The Colombian winger joined on loan from Ligue 1 side Lens in January.

As part of the deal, an option-to-buy clause was inserted.

The 22-year-old got off to a bright start at Ibrox, however, has been out of action since picking up an injury during a 2-1 victory over Kilmarnock on February 28.

He won't feature again this term, as Philippe Clement's side attempts to win a treble, with the Premiership title and Scottish Cup still up for grabs.