Chelsea boss Antonio Conte is delighted Cesc Fabregas and Willian are back.
Both played roles in victory at Manchester City.
"I hope to have this difficult decision in every game, it means I have great competition in my squad and the level is improving," said the Blues boss.
"Cesc played a good game against City and took his opportunity. Now for the next game I have a choice of four midfielders – Kante, Matic, Fabregas and Chalobah - and I have to take the best decision for the team.
"It's very important that we have good competition. If I have to put out the same line-up it's not good."