Louis Jackson took to Instagram to proclaim that ‘Manchester is RED’ after United’s Under 18 side defeated local rivals Man City in Premier League North on Saturday. Protecting a 100 per cent record – and extending their winning run to 12 games – the team from the red side of Manchester went one big step towards breaking a spell of blue-clad domination this weekend. Man City have claimed each of the last four Under 18 Premier League titles but a five-peat appears increasingly unlikely now after the unbeaten Red Devils widened the gap between the two sides to a staggering 14 points at the top o…