Pierre-Emerick Aubameyang's performances have dropped off since he signed his new £250,000-a-week Arsenal contract, according to former Tottenham striker Darren Bent.
The Gunners forward put pen to paper on a fresh three-year deal on September 15 to put an end to the speculation surrounding his future.
He scored in Arsenal's 3-0 win at Fulham on the opening day of the season but since then has bagged one Premier League goal in nine matches. The 31-year-old has notched four goals in 12 matches in all competitions as Mikel Arteta's side struggle for form.