Okonkwo was very excited to come back to the clan for many reasons.
1). He thought the men and boys had gone soft without him there. So he needed to come back and ¨fix¨ things.
2). Obierika tells him about the white man and his people converting to Christianity.
3). His beautiful daughter, and how she will be the most liked woman in the village, and he will marry her off for a very expensive price.