Manchester United manager Jose Mourinho supports the call for the summer transfer window to shut before the start of next season's Premier League.
A host of Premier League bosses have thrown their weight behind moves to ensure that from next term the summer transfer window will be closed before the start of the campaign.
The existing transfer window shuts on August 31, some 20 days after the start of the Premier League and a month into Football League fixtures. Changes are set to be discussed at a meeting of clubs next month.
West Brom boss Tony Pulis branded the window staying open past the start of the season as a "disease", while Manchester United manager Mourinho admitted he hopes the changes will be ushered in.
"My opinion is that we have to adapt to the situation; it doesn't matter what," said Mourinho.
"But as a football manager and not a market (ing) man, just as a football man, just as somebody that wants to work the team and wants to work the players, I would prefer the window to close as soon as possible, so everybody knows the players we have.
"The deals will be done earlier and nobody would be waiting for the last week and we wouldn't have the situation of sometimes a player to play game number one for a team and game number two for another team."
Mourinho also insisted the Premier League has enough clout to cope with its own window closing before the start of the season, even if other European leagues leave theirs open until the end of August.
That would allow European clubs to sign Premier League players even when English clubs could not recruit replacements, but Mourinho remains unfazed by that scenario.
"The question marks that somebody puts about if other leagues they don't close at the same time, are we in danger of losing players in the last couple of weeks?" said Mourinho.
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"And my question is how many clubs in the world are powerful enough to buy the best players in the Premier League? The answer I think is very obvious.
"So the risk is minimal and even these powerful clubs, they have to know if we cannot buy after let's say 13th, 14th, 15th of August more or less, if we cannot buy, we are not going to sell.
"So if they are interested in players from the Premier League, they have also to do it before that limit.
"Again, I repeat, I am not a market (ing) man, as a football manager I would like it to close before the first match."
West Ham boss Slaven Bilic backed the proposals but insisted they should be enforced across the continent or not at all.
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Asked if he agreed with vice chairman Karren Brady that 17 out of the 20 top flight clubs would be in favour of the window closing early, Bilic replied: "Yes. It is mutual from me and the club.
"We are on the same line. I would like that to happen. It would help everybody.
"For me it has to be across the leagues because otherwise there is no point. (Otherwise) it would put the clubs in an even worse situation that you would still lose players if the clubs from abroad wanted them and you wouldn't be able to replace them.
"It would only protect us if no other Premier League clubs can take your players.
"It doesn't have to be at the start of the season but before the first game of the season. It definitely should be across Europe."
Additional reporting by the Press Association.
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