A proposal by the Fifa president, Gianni Infantino, to expand the Club World Cup dramatically and to start a league for national teams, for a claimed $25bn from unidentified investors, has met strong criticism from within Uefa.

Infantino, who faces re-election next year, presented the proposal in March for a new summer 24-club World Cup every four years, and a “Global Nations League” with a final eight-country round of matches, also every four years. He has told Fifa’s six confederations, including Uefa, that the investors are promising the projected $25bn for four editions of each competition over 12 years between 2021 and 2033. The investors were described as “among the world’s most solid” but are unnamed, as Infantino said he had signed a non-disclosure agreement.

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Infantino has held talks with seven top European clubs, including Manchester United and Manchester City, about the plan, which could promise participating clubs an average of $94m each. City and United have not commented publicly but senior representatives of Real Madrid and Barcelona have reacted positively.

When the proposal was first presented to a Fifa council meeting in Bogotá, Infantino is reported to have said the investors required an answer within 60 days, a deadline that ran out this week. Fifa’s council members asked for more information and widespread objections have since been made to the plan, regarding the impact the club competition and the windfall to already-rich clubs would have on other clubs and leagues, the playing burden on top players – which Fifa believes will not be onerous – and the anonymity of the investors. The Premier League executive chairman, Richard Scudamore, has criticised the presentation of the proposals as a fait accompli and raised concerns about further pressure on players.

After a meeting in Lyon on Wednesday before the Europa League final, Uefa’s professional football strategy council (PFSC) said that its members “unanimously expressed serious reservations about the process … and in particular the hasty timing and lack of concrete information”.

The PFSC, chaired by the Uefa president, Aleksander Ceferin, incorporates the European Club Association, the European Professional Football Leagues and the European division of the players’ union, Fifpro. Manchester United’s executive vice-chairman, Ed Woodward, is an ECA representative on the PFSC and was party to the critical statement.

EPFL’s president, Lars-Christer Olsson, said after the meeting: “Fifa, the governing body of world football, is selling football at great potential cost to its development, without proper consultation and no transparency. We do not know who the investors are or how they have reached $25bn, which does not add up commercially. To use an expression we have in Sweden, this is a ‘black box’.”

Infantino intends to continue discussions and to secure agreement before the World Cup starts on 14 June.