Arsenal club legend Robert Pires believes that Mesut Ozil will have been angered by Arsene Wenger's reluctance to spend big in the transfer market.
Ozil is approaching the final six months of his deal at Arsenal, with Wenger acknowledging that the Germany international - along with fellow contract rebel Alexis Sanchez - may well be sold in the January transfer window.
And Pires, a stalwart of Arsenal's most successful period under Wenger's tutelage, claims Ozil has been frustrated by Arsenal's failure to add further stars to their squad.
"Ozil is a warrior who wants to win something," Pires told German publication Bild.
"To me, he seems so angry about the fact that Arsenal haven't put together the team with which he can make a difference.
"Arsenal has spent money only for Alexander Lacazette. That is not enough to be at the top."
"It's incredibly difficult to consistently remain at the top in England," the Frenchman added.
"But I still believe in Arsenal and first of all in Arsene Wenger. I think it's right he penned a new two-year deal."
