With just one day left to go until the January transfer window slams shut, here's a round-up of yesterday's deals
Liverpool forward Daniel Sturridge has joined West Brom on loan for the rest of the season, both clubs have announced.
The Baggies won the race to sign Sturridge on loan after the striker turned down the chance to go to Newcastle.
The 28-year-old has fallen down the pecking order at Anfield and, as a result of injury and subsequent non-selection, has not featured since the Champions League match with Spartak Moscow on December 6.
Also on Monday night, Barcelona winger Gerard Deulofeu joined Watford on loan until the end of the season.
The 23-year-old only returned to first club Barca in the summer after spending two seasons at Everton. Though he had struggled to make an impact at Goodison Park, Deulofeu impressed while on loan at AC Milan to persuade Barca to take him back.
Deulofeu becomes the first signing of new Hornets boss Javi Gracia, who took charge of the club on an 18-month contract on January 21, replacing Marco Silva following a downturn in results which the club blamed on interest from Everton in hiring Silva away.
An agreement has been reached between Arsenal and Borussia Dortmund for Pierre-Emerick Aubameyang, according to Sky Sports.
Reports suggest the £60million deal will be completed as soon as the Bundesliga side find a replacement for the 28-year-old.
Aubameyang has scored 85 goals since the start of the 2014/15 season.
Athletic Bilbao have confirmed that Aymeric Laporte's release clause, believed to be £57million, has been triggered.
Laporte is in Manchester to finalise his move to Manchester City, according to the BBC and he posted a farewell message on his official Twitter account thanking them for their support during his time at the club.
The 23-year-old would provide depth at centre-back for City boss Pep Guardiola, whose spending on defenders since last season would reach £190million if Laporte signs.
Manchester United forward Zlatan Ibrahimovic is being linked with a move to Major League Soccer side Los Angeles Galaxy.
United boss Jose Mourinho said: "If that is true and Zlatan wants a future in another club in another country we are here to help and to create conditions for that to happen, not to make his life difficult."
Meanwhile, Sky report that Tottenham have had a fee of around £25million agreed with Paris St Germain for Brazil international Lucas Moura.
Former Everton midfielder Tim Cahill has rejoined Millwall until the end of the season, the Sky Bet Championship club have announced.
The Australia international has completed his return to the Lions 20 years after starting his career there. The 38-year-old free agent underwent a successful medical earlier today.
Leonardo Ulloa has returned to Brighton on loan until the end of the season from Leicester.
The Argentinian forward returns to the south coast club after three-and-a-half-years with the Foxes.
Brighton boss Chris Hughton said: "We're delighted to welcome Leo back to the club. He's scored goals at Premier League level and will further strengthen our attacking options."
Diafra Sakho has left West ham to join French side Rennes on a two-and-a-half-year contract for an undisclosed fee.
Sakho has spent the last three-and-a-half-years at the Hammers scoring 24 goals in 71 appearances.
West Ham, who have not ruled out letting more players before the transfer window closes, are keen to sign Everton midfielder Morgan Schneiderlin and are prepared to pay £20million.
The Hammers have had another offer to buy Tom Cairney rejected by Championship side Fulham.
Celtic have signed Chelsea midfielder Charly Musonda on an 18-month contract.
Celtic said they had beaten several other clubs to the signature of the 21-year-old thanks to the influence of manager Brendan Rodgers.
"The Belgian Under-21 internationalist has been a much sought-after player in this transfer window, with many of Europe's top clubs keen to take him on loan," a club statement said.