Aubameyang has rejected Arsenal contract extension offer, has rumours say he doesn't want to commit his future to Arsenal.
Aubamenyang contract expires next summer and Arsenal are now willing to sell the striker and cashout this summer before his contract expires next summer before he leaves on free transfer next summer.

Aubamenyang was bought from Dortmund in the january transfer window in 2018 for a club record of £56m, Dortmund had earlier refused two bids from Arsenal before finally agreeing a deal.
Aubameyang signed for Arsenal on january 31st 2018 and made his debut match against Everton at the Emirate Stadium, also scoring one goal in his debut match.


http://danielgunners.com/why-arsenal-must-keep-aubameyang-at-all-cost/