The forward played in Sunday’s FA Cup semi-final defeat at Manchester United but was missing as Chelsea returned to the top of the WSL table on goal difference
Palmer has lit up the Premier League following his move to Chelsea from Manchester City, scoring 20 goals.
The Gunners were knocked out of the Champions League following a 1-0 defeat by Bayern Munich.
The Gunners were beaten 1-0 by Bayern Munich to exit the Champions League 3-2 on aggregate.