Aston Villa goalkeeper Emiliano Martinez left Arsenal in the summer through his own volition, believing he had proven himself during his time in north London.
Arsenal boss Mikel Arteta has called on his players to show 'big balls' in the Premier League run-in, after their humiliating 3-0 loss to Liverpool on Saturday.
Chelsea's 5-2 loss to West Brom gave Thomas Tuchel his first taste of the mentality issue which Jose Mourinho, Antonio Conte, Maurizio Sarri & Frank Lampard saw