- Man Utd
Emirates also has naming rights to Arsenal's stadium until 2021.
Left-back Nacho Monreal put Arsenal into an early lead with his fifth goal of the season, tapping in after home goalkeeper Aly Keita inexplicably let the ball slip from his grasp.
Harry Kane's latest heroics also made it sweet revenge for Tottenham after they were beaten at Arsenal earlier this season.
Pierre-Emerick Aubameyang's lively debut was aided by three assists from Henrikh Mkhitaryan in his first Arsenal start.
Olivier Giroud joins compatriots N'Golo Kante and Tiemoue Bakayoko in the Chelsea squad.
Mesut Ozil, a key member of the Germany side that won the 2014 World Cup, has scored 36 goals in 182 appearances and provided a high number of assists.
Pierre-Emerick Aubameyang joined Arsenal for a record fee of 56 million pounds.
Premier League leaders City are reported to have paid a club record 65 million euros for Athletic Bilbao defender Laporte, eclipsing the £55 million they paid for Kevin De Bruyne in 2015.
Arsenal goalkeeper Cech's miscued attempt to clear allowed Jordan Ayew to slot home Swansea's second goal at the Liberty Stadium.
Manchester United beat Burnley 1-0 with Antony Martial scoring the only goal of the match in the 54th minute.
Report suggests that Borussia Dortmund will not accept less than 60 million euros for Gabonese player Aubameyang, who is under contract with Dortmund until 2021.
Walcott, who has scored 108 goals in 397 matches for Arsenal, is surplus to requirements at the Emirates Stadium having made just 16 appearances this season.
Arsene Wenger said Friday there is nothing 'concrete' on Alexis Sanchez's future despite reported interest from both Manchester clubs but stated he will only be sold this month if Arsenal can find a replacement.
Championship side Forest revived memories of their glory years under Brian Clough, putting 13-times winners Arsenal to the sword in an incident-packed win at the City Ground.
Bellerin looked set to be the villain of the piece for Arsenal after the Spaniard's foul on Eden Hazard conceded a penalty that allowed the Chelsea star to cancel out Jack Wilshere's opener.
Arsenal had increasingly run out of ideas and an ambitious, long-range shot from Iwobi that Foster held easily was a sure sign of the visitors' frustration.
Arsenal drew level with fourth-placed north London rivals Tottenham Hotspur but with a worse goal.
Fourth-placed Liverpool remain one point above fifth-placed Arsenal after a Christmas cracker that underlined the qualities and problems with two teams.