Jadon Sancho could not resist a cheeky jibe at parent club Manchester United after his Chelsea debut. The England international signed for the Blues on loan with an obligation to buy in the summer, putting an end to his Old Trafford hell. Erik ten Hag had ostracised the winger last season after he refused to apologise following a social media outburst at the Dutchman. It saw him loaned to Borussia Dortmund for the latter half of the campaign where he helped them reach the Champions League final. After a shock move to Chelsea in the last days of the transfer window, Sancho made his debut off th…