Trevor Sinclair ripped into Arsenal's transfer strategy by insisting Mikel Arteta's side should have never have allowed Emiliano Martinez to leave last summer.
Arsenal are preparing to make a £30million bid for Sheffield United goalkeeper Aaron Ramsdale, just one summer on from letting go of Martinez for £20m.
Martinez had a superb season for Aston Villa and recently capped off a fine campaign by helping Argentina win the Copa America.
Trevor Sinclair (right) has questioned why Arsenal allowed Emiliano Martinez (left) to leave
Arteta wants greater competition for No 1 Bernd Leno, who kept four fewer clean sheets in the Premier League last season than Martinez at Villa.