The move follows a deal between Sky Italia and Italy's biggest commercial broadcaster, Mediaset, which the regulator said would further limit competition in a market where Sky Italia is already a dominant player.

Mediaset said last year it was selling its digital terrestrial pay-TV assets, known as R2, to Sky Italia as part of a broader content agreement between the two broadcasters.

The two companies agreed last month to partially cancel the sale, citing the unlikelihood that the watchdog would approve the deal without setting conditions.

However, the Italian regulator said on Wednesday it gave a conditional green light to the deal, adding that the "partial return" of pay-TV assets to Mediaset was insufficient to level the playing field for web rivals.

Mediaset closed its digital terrestrial pay-TV channels and moved its content to a video streaming service, after it lost 80% of its clients after dropping UEFA Champions League and Serie A's soccer matches from its offer.

Sky Italia was not immediately available for comment.

(Reporting by Elvira Pollina, writing by Giulio Piovaccari, editing by Louise Heavens)