Opta has made Manchester City overwhelming favourites to retain the Premier League title. This follows their 2-0 win at Nottingham Forest on Sunday. The victory came hours after Arsenal edged a 3-2 win over Tottenham Hotspur in the North London Derby. Liverpool were held to a 2-2 draw by West Ham on Saturday. Following the completion of those matches, Opta’s title predictor now has 70% in favour of City winning the Premier League. Arsenal have a 30% chance of winning it and Liverpool a 0% chance. The next round of games will see Liverpool host Tottenham, while Arsenal welcome Bournemouth to th…