West Zone also won their semi-final in commanding fashion beating Central Zone by a comfortable 279-run margin.
Umesh Yadav is the latest high-profile Indian cricketer to ensure his availability in County cricket. The Indian fast bowler will represent Middlesex.
Yash Dhull, who landed in India on Tuesday morning, will meet his family in a quick visit to Delhi before joining the squad in Guwahati on Thursday.
The Duleep Trophy is scheduled to be played in Tamil Nadu from September 8 to 25.
At the close of third day's play, India were 364/7 (92) for a lead of 366 runs against Leicestershire. Ravindra Jadeja was unbetan on 56.
India lead the three-match ODI series 1-0 after a four-wicket win in the opener. The second match in Ahmedabad is scheduled for Wednesday.
Cheteshwar Pujara, who has a near 55 average in List A cricket, scored his 13th hundred in the 50-over format.