Manchester United boss Jose Mourinho says Chelsea's success under Antonio Conte last season was no surprise.
When he was sacked the following season, he left behind a group of players who helped Conte take the Premier League back to west London last season.
Mourinho said: "The reality is that many of Chelsea's players have won two titles in three years.
“Only very good players can do that with a season in the middle which was really bad.
“But the majority (of Chelsea's players) have won two in three years."