Arsenal boss Mikel Arteta is facing a transfer crisis this summer, according to former captain William Gallas.
The Gunners are in need of a new striker having sold Pierre-Emerick Aubameyang to Barcelona on transfer deadline day and with Alexandre Lacazette and Eddie Nketiah due to leave when their contracts expire at the end of the season.
But Gallas has warned the Arsenal boss he faces a challenge to bring in players of the calibre needed.