Whilst deadline day can be an extremely exciting time for fans and journalists, clubs are often working to the wire, scrambling to get deals done. Many can be overpriced, or involving huge risks, but those decisions are taken in the hope the second half of the season can go in their favour.
Success rates are probably about 50% and here's the pick of the deals done on deadline day:
Lee Chung-Yong - From Bolton Wanderers to Crystal Palace - Undisclosed
The South Korean international completed a move back to the Premier League as Barry Bannan went the other way on loan. Crystal Palace's website confirms that Chung-Yong has signed a three-and-a-half-year deal with The Eagles for an undisclosed fee thought by the Daily Mail to be in the region of £1 million. That figure would represent a bargain as the 26-year-old is an incredibly talented winger with Premier League experience. If it wasn't for some unfortunate injuries his career would have progressed a lot further. Along with Shola Ameobi, and Yaya Sanogo, Alan Pardew now has plenty of attacking options.
Jesse Lingard - From Manchester United to Derby County - Loan
Derby County had a great deadline day bringing in Lingard as well as Tom Ince. Those young attacking additions will strike fear into their Championship opponents. Steve McClaren has been backed well in this transfer window with Stephen Warnock and Darren Bent also adding Premier League experience to the squad. Lingard has already had success at this level with Birmingham City and Brighton & Hove Albion scoring nine goals between the two spells.
Juan Cuadrado - From Fiorentina to Chelsea - £26 million
Chelsea sold André Schürrle and brought in Juan Cuadrado for similar amounts of money on deadline day. Has it improved their squad however? The Colombian international will have a job on displacing anyone in that Chelsea team but he certainly is an exciting player. Pace is a strong attribute of his whilst he also offers more defensively than Schürrle might have done. Cuadrado has joined on a deal until 2019 whilst Mohamed Salah has signed for Fiorentina on an 18-moth loan deal, Chelsea's website confirms.
Dele Alli - From MK Dons to Tottenham Hotspur - £5 million
Probably one of the most exciting deals of the day. Spurs have secured the signing of highly-rated 18-year-old Dele Alli from MK Dons. He has signed a contract until 2020 and has been loaned back to MK Dons until the end of the season. Alli has already scored 12 goals from the centre of midfield this season, and the confidence and bravery he shows is immense for someone of that age. There has been a lot of hype about Ross Barkley in the last year or so, but Alli is a much better prospect. Could be a huge player for Spurs for the next decade.
Yakubu - From Unattached to Reading - Free
Yakubu is well known to all English football fans having scored 97 goals during his time in the Premier League. That's more than Cristiano Ronaldo, Fernando Torres and Dennis Bergkamp. The former Portsmouth, Middlesbrough, Everton and Blackburn Rovers striker has spent some time away in Qatar and China, but has now joined Reading on a deal until the end of the season. The 32-year-old will bring a wealth of experience to the club and is sure to continue his superb record in this country.
The aforementioned deals all look to be good pieces of business, but there was one deal on Monday that caught everybody by surprise:
Most bizzare deal - Andy Kellet - From Bolton Wanderers to Manchester United - Loan
It doesn't seem to make any sense at all why Manchester United would bring in a player with just 52 minutes of game time for The Trotters this season. He has joined until the end of the season, and the only reason seems to be so he can bulk up Warren Joyce's defence for the Under-21's. This isn't someone who has been hotly tipped for success, in fact on stats website whoscored.com he has the worst rating of any Championship player this season. They had to beat off competition from Plymouth to secure the deal.