Tottenham boss Andre Villas-Boas is unhappy with the summer market overlapping the start to the season.
He believes the transfer window should shut before the start of the season to allow everyone to have a settled squad by the time the campaign begins.
"The window should finish at the beginning of the season," Villas-Boas said.
"It's extremely unfair for players, clubs and managers as they prepare for the beginning of the league.
"There has been a conversation about this between the managers in England but abroad, in UEFA Meetings (we have to) propose a closure before the league starts.
"I think it is something that makes sense and let's everyone focus on one direction. It's the same for everyone at the moment but it doesn't mean it's right."