Translate the following English sentence to French:
"We could possibly agree provisionally on a tariff quota ruling that is WTO compliant, but on condition that a date is specified on which the tariff only system will be introduced."
On peut éventuellement approuver temporairement un règlement de quota tarifaire conforme aux règles de l' OMC, à condition de fixer préalablement la date d' introduction du régime exclusivement tarifaire.