Arsenal cannot afford to sell Alexis Sanchez or Olivier Giroud if they want to challenge for the title.
That is the view of France and Gunners legend Robert Pires, who believes the signing of Alex Lacazette is just the start for Arsene Wenger's new look squad.
The arrival of his fellow French countryman has led to reports Giroud could be allowed to leave as he seeks regular football in this World Cup season. Meanwhile, star man Sanchez has been linked with Manchester City and Paris Saint-Germain.