Sheffield Wednesday may have made one glaring mistake during the summer transfer window. Sheffield Wednesday enjoyed an overall positive summer transfer window, which was capped with the loan signing of Shea Charles. Charles shone vs Coventry City last weekend. And speaking to Sheffield Wednesday News recently, Saints expert Fraser Spinney rated the chances of Southampton recalling Charles in January. Elsewhere, the likes of Yan Valery have impressed, whereas Ike Ugbo is struggling for form following his £3million move from French outfit Troyes. There was also several player exits during the s…