Alexis Sanchez has scored 34 goals and provided 17 assists in 71 games for Arsenal since his arrival last summer.
Mesut Ozil is the leading assist provider in the Premier League with 11 in 12 games.
Arsene Wenger is not yet ready to rule out Chelsea for a title challenge.
Gunners boss spoke about the tight situation at the top of the Premier League.
"If I find the right quality, I will do something," says the Gunners boss.
Mathieu Flamini has been earmarked to cover for the injured Francis Coquelin.
Arsenal are currently in fourth place, two points behind league leaders Leicester City.
Jose Mourinho wants Olympiacos to halt Arsenal's progression in the tournament.
Spanish right-back spoke to IBTimes UK following the 3-0 victory over Dinamo Zagreb.
Arsenal are without first choice defensive midfielder Francis Coquelin until the new year due to a medial ligament injury.
Olivier Giroud and Hector Bellerin were withdrawn with minor injuries says Wenger.
Ian Wright and Ray Parlour both believes the Gunners boss has to spend in the new year.
Arsenal face a must win Champions League clash against Dinamo Zagreb on Tuesday night.
Arsenal and Tottenham are interested in signing Partizan Belgrade youngster Andrija Zivkovic.
David Seaman claims Petr Cech has won everything during his time at Chelsea.
Arsene Wenger does not know what led to Santi Cazorla's miss against West Bromwich Albion.
Arsenal are going through one of their worst injury crisis and are currently without eight first-team players.
Sanchez has played 69 matches for Arsenal and 22 matches for Chile in the last 15 months.
Alex Oxlade-Chamberlain has been sidelined since the clash against Sheffield Wednesday on 28 October.
The 21-year-old has stood in for injured Ospina.
Nacho Monreal is currently Arsenal's first choice left-back after displacing Kieran Gibbs from the starting XI.
Both players have two and a half years left on their current deals.