Rangers boss Warburton has already been linked with jobs in England.
Rangers only hired Mark Warburton over the summer, but former Celtic striker Charlie Nicholas has told Sky Sports that he believes the manager will see his job through, although he has questioned whether Warburton could look to leave after he gets the Gers promoted to the top flight.
Nicholas said: "We're already talking about Warburton, not going back to Brentford but Fulham were linked with potentially speaking to him. I think he'll see the job through but he's different. I think if he got through to the summer and got Rangers up, would he be keen to maybe move?"
Sky reported earlier this month that Warburton was on the shortlist of Fulham in their search for a new manager, having been impressed by the work he has done at Ibrox this season.
Rangers lead the Scottish Championship, and although they have faltered in recent weeks, they have still only lost two games in all competitions, playing an exciting brand of attacking football.
He impressed in the English Championship with Brentford, and many believe he is the next manager to go and enjoy a successful career.
Considering he is only months into his job with the Gers, it would be a surprise to see Warburton leave Ibrox to return to England, and Nicholas has admitted that he believes the manager will see his job through.
Getting Rangers back into the Premiership is the main aim for Warburton, and although he could be tempted to fight for top flight success at Ibrox, that would be a real tough task.
This is when Nicholas has suggested Warburton could leave. If he gets them promoted, the manager will be well aware than winning the league ahead of Celtic will be hard, and Warburton could be tempted to leave for another job where success is more likely.