Arsenal broke their transfer record to sign Mesut Ozil from Real Madrid on deadline day. Here we round up the major Premier League deals.
Ozil, 24, signed a long-term contract at the Emirates Stadium for a fee reported to be in excess of £40million, giving the club's fans the big-name signing they craved.
The attacking midfielder joined Arsene Wenger's side in the last hour before the transfer window shut, and his arrival is a significant boost to the club's hopes this season.
The Germany international was not the only arrival at Arsenal on Monday, with Italian goalkeeper Emiliano Viviano signing a season-long loan deal from Palermo earlier in the day.
Monday's other biggest deal saw Manchester United finally complete the signing of midfielder Marouane Fellaini from Everton for a fee of £27.5million.
The 25-year-old became David Moyes' second signing following the arrival of young full-back Guillermo Varela, though the Scot allowed Bebe to leave for Pacos de Ferreira.
Meanwhile, Liverpool added three players to their squad on transfer deadline day, doing their business early, as defenders Mamadou Sakho and Tiago Ilori signed permanent deals while winger Victor Moses joined on loan from Chelsea.
Sakho, 23, arrived from Paris Saint-Germain for a reported fee in the region of £18million and the Frenchman will give manager Brendan Rodgers options in central defence, while another player in that position, Tiago Ilori, joined from Sporting Lisbon.
Moses signed a season-long loan deal at Anfield, while Liverpool sent attacker Fabio Borini to Sunderland for the remainder of the 2013-14 campaign, and Dani Pacheco left, signing a permanent deal at Spanish outfit Alcorcon.
Another Italian, Andrea Dossena, also joined Sunderland on a permanent deal from Napoli.
Crystal Palace were among the most active sides in the window, completing their business by signing defenders Adrian Mariappa and Jack Hunt, and midfielder Barry Bannan.
Mariappa, a centre-back from Reading, and left-back Hunt – who joined from Huddersfield Town – will give Palace depth, while Scotland international Bannan was brought in from Aston Villa.
Palace defender Peter Ramage exited the club - signing for Championship side Barnsley on a season-long loan deal.
Stoke City completed the first move of Monday, with striker Marko Arnautovic signing from Werder Bremen on a four-year deal, while Aston Villa's Stephen Ireland joined on loan for the season.
West Brom broke their transfer record to sign Sunderland attacker Stephane Sessegnon, with the Benin international signing a three-year deal at the club.
And The Hawthorns outfit also signed France international Morgan Amalfitano from Marseille on loan for the season, with the option to make the deal permanent, while goalkeeper Lee Camp joined on a free transfer.
Despite further bolstering their squad with the acquisition of Victor Anichebe from Everton, there was late disappointment for Steve Clarke's side as they missed out to the same club on the loan signature of Romelu Lukaku from Chelsea.
Armed with the money from Fellaini's sale, Roberto Martinez's side went on to add James McCarthy to their ranks on a permanent basis, while Gareth Barry and Romelu Lukaku arrived on temporary deals from Manchester City and Chelsea.
Cardiff City signed West Brom forward Peter Odemwingie, subject to Premier League ratification.
The Nigerian forward had been linked with moves to Swansea and Stoke during the transfer window but Malky Mackay has won the race for the 32-year-old, who has signed a two-year deal after the £2.5million move.
Elsewhere, Aston Villa signed Czech striker Libor Kozak from Lazio, for a fee reportedly worth £7million, Swansea loaned Alvaro Vazquez from Getafe and Manchester United defender Nick Powell joined Championship side Wigan Athletic, also on loan for the duration of the season.
Stoke sent Ryan Shotton out to Wigan for the season, as Tottenham also allowed Tom Carroll and Benoit Assou-Ekotto to drop down to the Championship with QPR and Fulham signed Elsad Zverotic from Young Boys.
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