Premier League: Bernd Leno feels Arsenal showed a good attitude in the second half of their defeat to Everton, and it demonstrated that the team was "alive".
Arsenal's hopes of qualifying for the Champions League suffered a fatal blow as Neal Maupay fired Brighton to a last-gasp 2-1 win, while Watford snatched a late 1-1 draw against Leicester.
The England international made his Gunners debut in 2008 and has made 197 first-team appearances.
The Gunners, who finished sixth last season, had previously signed Swiss defender Stephan Lichtsteiner on a free from Juventus, while midfielder Granit Xhaka extended his contract.