Alex Iwobi made his first start for the Gunners against Sunderland in the third round of the FA Cup.
Midfielder is yet to play since his move from FC Basel in the January transfer window.
Alexis Sanchez made his first appearance in an Arsenal shirt against Chelsea in almost two months.
Danny Welbeck last played for Arsenal during the 0-0 draw against Chelsea in April 2015.
Catalan giants wanted to sign 29-year-old forward on loan until season-end but have been rebuffed by Celta.
The 27-year-old star has come in for more criticism following the Blues' win at the Emirates.
Francis Coquelin is likely to feature for the Arsenal first-team or for the U21's on Saturday (30 January) against Burnley or Stoke City respectively.
50% of fans feel the Gunners still need another striker.
Arsenal have emerged favourites to sign Kylian Mbappe from Monaco.
The Gunners missed the chance to go top of the Premier League after a 1-0 defeat to Chelsea.
The Blues are 14 points behind Tottenham after a 1-0 win at the Emirates Stadium.
Arsenal have not beaten Chelsea in over five years.
Mesut Ozil has 16 assists this season, more than any other player in the Premier League.
Arsenal host Chelsea at the Emirates as the Gunners look to go back on top of the table.
Arsenal play Chelsea at the Emirates after two difficult games away from home.
Chelsea are unbeaten in their last eight Premier League games against the Gunners.
Ben Chilwell is yet to make an appearance in the Premier League for Leicester City.
West Ham have beaten both Arsenal and Manchester City this term.
Petr Cech has kept 10 clean sheets thus far for Arsenal.
The Czech Gunner suffered a fractured skull while playing for Chelsea in 2006.
French boss expects a busy final 10 days of the window – but not with the Gunners.
Arsene Wenger says next two days are decisive for Sanchez's chances of facing the champions.