Marionette.CompositeView, how to pass parameters to Marionette.ItemView

I would like to access the app.vent from Marionette.ItemView.

Maybe an option could be to pass a parameter (app.vent) to Marionette.ItemView from Marionette.CompositeView.

Here my code:

// view/compositeView.js
define([
    'marionette',
    'views/item'
], function (Marionette, itemView) {
    var ListView = Marionette.CompositeView.extend({ 
        itemView: itemView
    });
});

Any ideas?

P.S.:
I cannot access the app from itemView because there is a problem of circular dependency.

app -> view/compositeView -> view/itemView