There are a lot of clubs which eventually regretted after letting go a player who exploded in the following season. Arsenal is also one of those, and they have a couple of examples from the past few years. One of the biggest mistakes of Arsenal’s transfer policy in the past few years is letting Serge Gnabry go since he now shines in the Bayern München’s jersey.
Yet another name that could appear on the list of biggest transfer fails is Donyell Malen. As per Daily Mirror reports, Arsenal is considered as one of the clubs interested in signing Donyell Malen from Dutch runners-up PSV Eindhoven.