By Nathan Ridley Jadon Sancho was awkwardly blanked by one of his new teammates at Borussia Dortmund when he pleaded to take a penalty on his second full debut for the German club. Sancho, fresh from completing his six-month loan move to former club Dortmund after being exiled at Manchester United, was fouled inside the 18-yard box as they led Koln 1-0 away from home with nearly an hour gone on Saturday. The 23-year-old loanee, who fell out with United manager Erik ten Hag back in September, got up and demanded to striker Niclas Fullkrug: “Give me the ball, give me the ball.” But Fullkrug, who…