By Jacob Leeks Alejandro Garnacho was caught picking his nose on the Manchester United bench after being subbed off during their defeat to Manchester City. United travelled to City in the Manchester derby on Sunday, taking a surprise lead through Marcus Rashford’s superb goal. But Phil Foden pegged them back after the break, before the England international scored a late winner and Erling Haaland wrapped up a 3-1 victory. Garnacho started at the Etihad Stadium, coming off just after Foden’s second goal. He took his place on the bench after enduring a difficult afternoon, with Omari Fosun comin…