Manchester United found themselves under pressure to strike a balance in midweek. One day before Erik ten Hag’s senior squad were due to kick off against the Premier League’s basement side Sheffield United at Old Trafford, the Red Devils’ extremely highly-rated Under-18 side had a date with neighbours Man City in the Premier League Cup final. With a never-ending spate of injuries offering first-team opportunities to a number of Carrington starlets, how would Manchester United balance the senior duties of three of the club’s best up-and-coming talents with a trophy on the line, and Adam Lawrenc…