The reigning champions have struggled to defend their crown this season and will finish outside of the European places in England's top flight for the first time since the 2002-03 season.
"It is a disappointing season," Fabregas told sport1.de. "It will be the first time in years I won't play Champions League. We must come back stronger. I hope that we can compete for the title in England next year. In Antonio Conte there will be a new manager. He has proven that he can work successfully, especially at Juventus he had a strong time."
Chelsea currently sit ninth in the Premier League table on 47 points.