Kante has starred for the Blues since his summer move from champions Leicester and Costa is the Premier League’s top scorer with 12.
But Conte says it’s important to see how much strength in depth he has in his squad.
“For this reason it’s important for this test to read the situation in our squad”
Chelsea boss Antonio Conte
“For this reason this is a good test for us because we play this game without two of our important players for our team,” he said.
“For this reason it’s important for this test to read the situation in our squad.
“Also to give the possibility to play some players who until now are not playing a lot. Or to find another solution.
“What I may see this week is very important.”
Chelsea are six points clear at the top of the league after winning their last 11 games.
Victory over Bournemouth would edge them closer to Arsenal‘s all-time Premier League winning record of 14 consecutive games.