The 29-year-old, who is in the final year of his contract, has been linked with a move away from the Hawthorns this summer, but Clarke has revealed that he expects him to stay.
"There has been no indication that Jonas is going to leave us. Over the summer he's worked well, played games and played with his normal 100% commitment," he told Sky Sports News.
"He's got a year left on his contract so he's not a free transfer so as far as we're concerned Jonas is under contract and will be with us next season. There is nothing that's happened over pre-season to change our mind on that."
Olsson has 10 Swedish caps to his name.