The futures of Manchester United starlets Alejandro Garnacho and Kobbie Mainoo are up in the air at the moment, likely to Sir Alex Ferguson's chagrin. The legendary Scot branded both youngsters the "heart and soul" of United last year following their simultaneous emergence from the club's academy. But the pair look increasingly unsettled at Old Trafford, particularly since Ruben Amorim's arrival in November, and could both be shown the door this month. Garnacho, who hasn't started a match since