Martin O'Neill believes the transfer window should close earlier than its September 1 deadline in the summer and wants it to shut off before the season starts.
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With just days remaining in the window, O'Neill accepts the inclusion of the transfer window but questions if clubs might be better served by altering the date in which it closes.
Speaking to The Journal, O'Neill said: "I understand why they brought the transfer window in because no one wants a top team to be buying themselves a European Cup-winning team. If one of these big teams gets into the last 16 and then buys five or six players, then you have a problem. But overall, I'm not so sure you would get too many people agreeing with how it is set out."
The Black Cats manager feels that by closing the window prior to the season's commencement it could benefit clubs and says his opinion is one shared by his fellow managers.
"I think there's certainly a major argument for ending the transfer window on the night the season kicks off - or a few days before so people have their squads together," O'Neill explained.
"I wouldn't know too many managers who would disagree with me there. It's a bit of a strange one that you're going to a game, yet you're thinking 'I've still got a couple of weeks to make changes'."
He went on to add: "You start getting concerned then if you haven't got the players in because, for all the promises you've been made, they can disappear so quickly. The transfer window is what it is and we've got to accept it but, I would say that it should shut the Wednesday night before the season starts. That is it.
"Maybe UEFA's argument is that all seasons don't start at the same time. Is there a point there? It may well be a decent argument, but it's certainly strange to me that the season has kicked off, yet here I am trying to make changes while games are going on. It's very strange."