However, Morgan said that the current 50-overs format was exciting for viewers, despite being threatened by the emergence of the Twenty20 cricket.
"I am not sure it needs it (the world league). Cricket is in a reasonable position at the moment," the 29-year-old told, who also captains England's Twenty20 side, British media.
"The Champions Trophy next year will highlight that, it is a great tournament whereby something is on every game. The World Cup goes on a lot longer," he added.
Dublin-born Morgan added that while he was in favour of growing the game in associate nations such as Afghanistan, Ireland and Scotland, scheduling fixtures in an already packed calendar remained a concern.
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"It is interesting to see how the ICC get those games in ahead of different series when the schedule is already jam-packed but I am all for growing the sport," he added.
"The prospect of playing against associate nations more often and giving them as much cricket as possible is a really good way of growing your sport.
England play the first of five one-dayers against Sri Lanka in Nottingham on Tuesday.
(Reporting by Nivedita Shankar in Bengaluru; Editing by John O'Brien)
