The Wales midfielder lasted just 16 minutes against Hull City in the fifth round replay.
The 26-year-old forward admitted the meeting took place without Arsene Wenger's knowledge.
Former Manchester United defender feels Gunners would be better served by concentrating on Premier League.
Alex Oxlade-Chamberlain will enter the final two-years of his contract at the end of the current campaign.
The 17-year-old midfielder has revealed the move is the fulfilment of a long-term ambition.
Arsene Wenger is on course to win his seventh FA Cup trophy as manager of Arsenal.
Giroud scored his first goal since mid-January, while Walcott scored his first goal since December 2015.
Ian Wright believes there is still time in the season and a Wenger Out banner isn't the need of the day.
Arsenal suffer triple injury blow as they beat Hull City to progress to quarter finals of FA Cup on 8 March.
Arsenal youth player Stephy Mavididi believes Per Mertesacker uses his experience to great use.
Alex Iwobi has made 10 appearances in all competitions for the Arsenal first-team this season but is yet to score a goal.
Arsenal boss is refusing to write off his side's chances despite losing ground to Leicester.
Gabriel Paulista spoke with IBTimes UK following the 2-2 draw at Tottenham.
Arsenal have lost three and not won any of their last five fixtures in all competitions.
Coquelin was sent off after he picked up his second yellow following a reckless tackle on Harry Kane.
Nacho Monreal was on the bench against Tottenham as he was struggling with a calf problem.
Spurs missed an opportunity to go top of the Premier League.
Alexis Sánchez gave 10-man Arsenal a vital point at White Hart Lane.
David Ospina and Gabriel Paulista are set to start against Tottenham Hotspur following injuries to Koscielny and Cech.
Sol Campbell claims Arsenal are still the top club in north London, ahead of Tottenham.
Tottenham have lost just one of their last seven Premier League games at home to Arsenal (W4, D2).
Jack Wilshere handed boost regarding chances of making England squad for Euro 2016 in France later this year.