Worldwide transfer windows calendar. Dates are entered directly by the associations. This page is updated once per month (last updated on ). Transfer window. 10 July Rumour Mill Football transfer rumours: Manchester United to sign Tiemoué Bakayoko? Published: AM. Transfer window | Page 2 of · Transfer window January. You know it's the Summer transfer window when the rumours go into overdrive and Arsenal fans start complaining they aren't spending. With this summer seeing.