Input tax credit of stock held on appointed day

Respected Sir, My friend purchases Yarn which is taxable and he manufactures & sales Grey. As per present law (The Gujarat Value Added Tax Act 2003) every dealer whose total turnover during the year immediately preceding the appointed day exceeded Rs.5 lakh in a year are liable to be registered under the Act. And "Total turnover" means aggregate of the following transactions effected by a dealer: (a) turnover of sales or purchases of goods within the State whether such sales or purchases of goods are taxable or exempt under this Act; (b) turnover of sales of goods in the course of inter-State trade or commerce; (c) turnover of sales of goods in the course of export of goods out of the territory of India; (d) turnover of sales by a dealer on his own account and also on behalf of his principal. Thus, my friend is liable to get registration, however he has not taken registration. Now suppose tax is leviable under GST on supply of Grey. Whether he (who have not taken registration although he is liable under present law) will be eligible for Input Tax Credit of stock held on appointed day? Please guide us.