New Zealand allrounder Corey Anderson has suffered another injury setback and will play no further part in County Cricket in England.
Anderson is returning home to undergo treatment for a stress fracture to his back and will miss the rest of Somerset's T20 campaign.
Anderson hit 81 on debut for Somerset in defeat against Surrey at The Oval, but he did not bowl a ball in his four matches.
"I am grateful to Somerset for giving me an opportunity to play cricket in England and only sorry that I have been unable to conclude my stay with them," said Anderson.
"However I hope that at some point in the future when my back problem has been resolved that I will be able to return."
He suffered a double stress fracture two years ago during New Zealand's Test against England at Lord's, which caused an eight-month absence from international cricket.
Since then, he has only taken more than two wickets in an innings once in international cricket when he returned 3 for 55 against England in Cardiff in June.
Anderson has been replaced at Somerset by Pakistan opening batsman Fkhar Zaman.