Cameron Bancroft will not be joining Somerset as an overseas player this season following his role in the Australia ball-tampering scandal.
The opening batsman was handed a nine-month suspension by Cricket Australia after being caught on camera attempting to alter the condition of the ball during the third Test against South Africa in Cape Town.
The 25-year-old had been signed by Somerset in December during Australia's Ashes win over England and was due to play at Taunton for the start of the 2018 County Championship season.