Alexis Sanchez
Alexis Sanchez suffered a hamstring injury during Arsenal's 1-1 draw against Norwich City in NovemberGetty

Arsenal have been handed a massive injury boost ahead of their crucial fixture against Manchester City on 21 December with Alexis Sanchez set to return to training next week. The Chilean international pulled up with a hamstring strain during the Gunners' 1-1 draw against Norwich City in November.

According to the London Evening Standard, the former Barcelona star, who has been undergoing treatment and rehabilitation in his homeland, will return to London Colney next week. Arsene Wenger will hope to have the services of his talisman for the visit of the Etihad Stadium outfit in what will be a crucial clash in the run up to the busy festive period, which will see the north London club play three games in eight days.

Sanchez has been a key player for the Gunners since his arrival from the La Liga last season and was even named the Football Supporters' Federation player of the year for his impressive showing in his first season in the Premier League, which saw him help Arsenal to a second consecutive FA Cup triumph. The 26-year-old attacker returned home following the injury and has been receiving treatment from the Chile team's medical staff with the forward sharing a picture of him training in a gym on his official instagram account.

The French manager, however, will exercise caution this time around and will not rush the player back into action despite a crucial run of fixtures, as his absence has not derailed Arsenal's domestic or European campaign. The north London club's fringe players have grabbed the opportunity and performed well to help the Gunners record victories over Sunderland and Olympiacos.