Sheffield United left it late to do their business, but still brought in a solid give new players to bolster their ranks, with the likes of Aston Villa's Conor Hourihane, Roma's Robin Olsen and Liverpool's Ben Davies all arriving at Bramall Lane on loan deals.
One area of real interest in modern football is how well clubs invest talent to sell on, with the wildly inflated market meaning a player could be bought for a bargain fee one season and flogged for big money the next.
At the opposite end of the spectrum, some players command multi-million pound fees, before winding down their contracts and leaving for nothing a few years later.
Now the window has closed, we've taken a look (via BettingOdds.com) at how much profit on previously purchased players every Championship club has made over the last five years. Sales of academy players are also factored into the figures.
This is how Sheffield United's profit percentage on players sold ranks alongside all of their divisional rivals over the past half-decade of transfer activity: