Football Transfer Window

I'm not sure about the benefits of the transfer window? It was initially introduced by FIFA to put the UK in line with the rest of the footballing world. A number of English managers want a return to the old system, whereby clubs could sign players throughout the season. Steve Coppell in particular argues the case for the re-introduction of the old system. I agree with him, because I feel at the moment clubs have to pay over the odds for players because of the limited time available to them. This has a bigger impact on the smaller clubs outside the premiership who do not have the financial clout of the wealthier clubs.