#3 Liverpool

The Premier League title race is going to be a close one with both Manchester City and Liverpool strongly challenging for it. The Reds sit second in the league table, six points behind the defending champions with a game in hand.
With many games left in the season for both teams, the battle could not be any more entertaining. Liverpool have been a great attacking force this season, scoring 70 goals so far, the most by any Premier League team this campaign.
Mohamed Salah has been in stellar form for the Reds, and his 19 league goals have been quite vital for them. Apart from the Egyptian, six goals from substitutes have come in handy for Liverpool's cause. Out of the six, Divock Origi and Takumi Minamino have scored twice from the bench.
#2 Manchester City

Manchester City have been quite dominating in the Premier League, especially after Pep Guardiola took over as their manager in 2016. The Spaniard's amazing knowledge and tactical brilliance has helped the club to be very productive in front of goal.
Along with their superb attacking abilities, Manchester City have managed to be quite solid at the back. With just 17 goals conceded in 26 games, they have the best defensive record in the league right now.
Courtesy of their quality squad depth, their substitutes have played a key role in turning around games when needed. Manchester City have been able to register six goals from the bench this season, out of which Riyad Mahrez has scored three goals.
#1 Manchester United

Manchester United have had an inconsistent season so far and there are multiple reasons for it. Nevertheless, the Red Devils sit fourth in the league table with 46 points.
United players have struggled with their form on the pitch and will need to be at their very best if they are to qualify for the Champions League. With the experience of Cristiano Ronaldo, they should be able to pose a strong challenge.
The Red Devils have so far scored 44 goals in the Premier League this season, out of which 10 of them have come through substitutes. Marcus Rashford may have been struggling in form lately but has contributed four goals when coming off the bench.