"The Portuguese League is concerned with this intention, which calls into question the sustainability of professional football clubs, especially regarding the islands," the LPFP said in a note sent to Lusa in reaction to the announcement of TAP’s change in the sports tariffs for the islands of Madeira and the Azores.

During the weekend, 'Nacional', which was demoted to the second league this season, showed their concern for the end of the sport’s tariff, saying that the decision called “in question the national participation.”

In response, TAP, which at the end of March eliminated the tariff, set at €280, said that the end of the "sport tariff” applied to the various sporting modalities for the islands of Madeira and the Azores, is more favourable now than in the previous model, claiming that in 60% of cases it will be possible to travel at a lower rate than the one applied so far.

Nacional said: "The tips of the senior football team of CD Nacional for the pre-season preparation stage to be held on the mainland, although scheduled more than a month in advance, it will cost 36% more than if the sports tariff was applied."