Moyes, for the first time, concedes that he has occasional feelings of deep frustration that Everton are playing in Europe without the right resources, and their domestic form is suffering.
He said: "Regrets? I have tried not to have any regrets about it (playing in Europe).
"But the more and more games you play in it, the more and more times you realise that some other managers have talked a lot of sense about the number of games in the Europa League.
"With the squads we have got, us particularly, it is very difficult to win Premier League games when you have got so many midweek games.
"The word rotation gets used to make sure everyone is as fresh as they can be.
"But we do not have that depth of squad, so we could look back and say that Europe has been a hindrance to us.
"I don't like talking that way. I have always wanted to talk positively about playing in Europe, we always want to qualify.
"But undoubtedly it could be having some effect on the domestic results we are getting now."