Madjid Bougherra and Scott McDonald are among the Old Firm's foreign imports
The Scottish Premier League insists it is in good shape to cope with any possible limit imposed on the number of foreign players.
Fifa is planning new talks with the European Commission on their proposal to allow no more than five overseas players in a club's starting XI.
"It could be said that we are ahead of this game," SPL executive chairman Lex Gold told BBC Scotland.
"We would broadly, as a nation, meet those rules."
Fifa's "6+5" rule was approved by 155 of the organisation's member nations last year.
But the European Commission believes a quota on foreign players would be incompatible with EU law as it amounts to discrimination at work and a restriction on the free movement of workers.
"Fifa has been keen to see this adopted for some time now - it's based on nationality," explained Gold. "Uefa take a different approach and are trying to push for a home-grown talent rule, which they use in their own competitions.
"Under those conditions, your A squad would need a squad of 25, of whom eight would be home-grown and four of which must be indigenous.
"Given the European Union rules on employment, in my judgement, the home-grown talent rule sits with that more happily than the Fifa requirements. But they're both seeking to achieve the same end.
"When we set up the SPL, not only did we have Under-21 rules, we also had no reserve league and an Under-21 league. That has since been modified as we brought through young Scottish talent.
"There's nothing there for us to fear. One or two clubs may have to look at each Saturday on the balance."
The SPL commissioned 'a snapshot' of the league in December and 61% of the players involved were Scottish, 16% from the rest of the UK and the Republic of Ireland, 17% from Europe, while 6% came from the rest of the world.
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