Arsenal now have a golden opportunity to re-sign one of their former players for free. The Gunners have only completed two deals in this window – David Raya’s loan was made permanent and Riccardo Calafiori was brought in from Bologna. Mikel Arteta and Edu Gaspar are still active on the transfer market, and they are looking for opportunities to strengthen the squad. Now, some potentially good news has arrived for Arsenal. Arsenal can re-sign Wojciech Szczesny on a free transferWojciech Szczesny left Arsenal on a permanent deal in the summer of 2017. The £199k-a-week (SalarySport) Pole had spent…