Unadkat will likely be accessible for choice for the video games towards Durham, Leicestershire and Derbyshire.
Sussex need to safe promotion to the primary division.
Unadkat, 31, has performed 4 Tests, 8 ODIs and 10 T20I matches for India and was just lately a part of the Test facet that toured the West Indies.
“I am excited to join Sussex for their Championship games in September. The English County Championship has a wonderful legacy, and I was keen to grab the opportunity whenever I can and it seems to be the right time for me at this point in my career,” Unadkat said in a release.
“His record is outstanding, and we will be looking for Jaydev to share his experience with our developing team. Everyone at Hove is looking forward to Jaydev being part of this Championship run in and help the team to take wickets and win games of cricket,” Sussex head coach, Paul Farbrace mentioned.
Unadkat has taken 382 first-class wickets in 103 appearances, at a median of twenty-two.5 and with finest bowling figures of 8-39.
Source: timesofindia.indiatimes.com