Somerset have confirmed that Abdur Rehman will be available to play for the county for the "final few weeks" of the 2013 season.
The Pakistan spinner was an impressive signing for Somerset last summer, taking 27 County Championship wickets in four matches at an average of just 14.19.
Somerset cricket committee chairman Vic Marks said: "At the moment he is contracted to play the final few weeks of the season which will include five championship games and one day cricket as well.
"Subject to his international commitments we will try to extend his contract through into the T20 period to make him available for that as well."
Rehman is currently nearing the end of a 12-week ban after he tested positive for cannabis following Somerset's County Championship clash with Nottinghamshire in August.
Somerset chief executive Guy Lavender said: "The Club in no way condones the use of illegal drugs. It was heartening to see that he admitted his mistake and has been punished accordingly.
"It is now time to move on and I am very confident he will do extremely well for us next season."
Rehman added: "I really enjoyed my time there last year and will look to play with the same intensity and passion. I would also like to thank the Somerset management and fans for their support in what has been a difficult period."