Former Chelsea striker Tony Cascarino has now claimed that Mikel Arteta failed to get the best out of Eddie Nketiah at Arsenal. Eddie Nketiah is likely to leave Arsenal this summer. The Hale End academy graduate slipped down the pecking order at the Emirates Stadium last season, and spent the second half of the campaign on the outskirts of the squad. Nketiah is now close to joining Marseille, as it is clear that he is no longer in Mikel Arteta’s plans. Arsenal are now pushing to sign Dominic Solanke. Meanwhile, Nketiah needs to move on from North London for the good of his career. The 25-year-…