By Dan Marsh Jamie Redknapp believes Kobbie Mainoo’s emergence this season is even more impressive because of Manchester United’s poor form. Mainoo, 18, has earned rave reviews since being integrated into Erik ten Hag’s first-team squad. The teenage prodigy has quickly established himself as a key figure at Old Trafford and has even been fast-tracked into the England squad, winning his first two caps during the recent international break. The young playmaker’s breakthrough has come during a difficult campaign for United, who could yet miss out on qualifying for next season’s Champions League. …