Devlin signed her first professional contract with Arsenal in June last year and she is also an England U-19 international, reports millwall.fawsl.com.
The 18-year-old helped the Gunners’ Development side to a league and cup double in 2015/16, and to the U-17s league and FA Girls’ Cup the season before that.
Manager, Burch said of his new signing “Charlie is a player we spoke to Arsenal about last year and it’s great to get her on board for the final couple of months of the Spring Series.”
“She is a player that will bring something different in attack and this has been an area we have been trying hard to improve for the Spring Series.”
Devlin is eligible for Sunday’s home match against Everton at St Paul’s Sport’s Ground, kick-off 2pm.