Strong differences of opinion are emerging in private between the breakaway clubs, Sky Sports News understands.
Some of the executives involved believe they are being hung out to dry and are beginning to get cold feet. They are very nervous and disappointed about the way this has been handled.
One of the ESL club executives said: "This is not what we signed up for."
Some of the breakaway clubs were very bullish about setting up the ESL as soon as possible, while others saw it as an opportunity to sign up to something which they were willing to explore.
According to Sky Sports, some of the clubs now want the ringleaders to come out immediately to explain their plans. They were under the impression that there was going to be a controlled media policy and they are disappointed that this has not been the case.
One executive said he was shocked and taken aback by the lack of an effective media strategy.
Managers of all the clubs concerned have privately expressed concerns that they have been put in the firing line.
Managers and players had been kept totally in the dark, Sky understands.
The Guardian claim a high-placed executive at another club approached to be involved believes Manchester City and Chelsea could perform a U-turn.
Even some board members at the breakaway clubs were not aware of exactly what had been going on behind the scenes.
Fifa president Gianni Infantino told the 12 breakaway European Super League clubs on Tuesday that they could not be "half in, half out" of the established football system and must face up to the reality of their decision.
Real Madrid, Barcelona, Manchester United, Liverpool and Juventus are among the members of the proposed new league, but Uefa has threatened to ban them from domestic and international competition and vowed to fight the move.