Chelsea and Aston Villa are battling to stay in the top four of the table. Both these teams want to qualify for the Champions League. And Chelsea and Aston Villa are moving towards this goal. Last season we saw a very poor performance from Chelsea. However, the team won consistently in the last few matches of the season. So Chelsea was able to occupy the sixth place in the table until the end. And Chelsea's aim this season is to qualify for the Champions League.
All three teams are sure to fight for the title. Even in the last few seasons we have seen all three teams doing well in the Premier League. Liverpool, Manchester City and Arsenal all have strong squads. So this season the fight for the Premier League title will be more crowded.
The rivalry between Chelsea and Aston Villa will be determined by consistency, moreover a long season requires both teams to have player options and here Chelsea is very favoured because they can still continue to maintain their performance until the end of the season. While Aston Villa's squad is limited and then in the Champion League strong opponents await so it will be more draining than Chelsea. The Blues lose 1 or 2 players can still be patched up with other players but when Aston Villa loses players then the consistency can be reduced.