By Laura McGuire Fast-fashion giant Shein is set to miss out on a place in the FTSE 100, according to reports, as the incoming mega listing continues to spark debate in the City. The Sunday Times reported that the number of shares set to be sold by the Singapore-headquartered fast-fashion giant “will fall short of the minimum required to qualify for inclusion in FTSE indices”. London Stock Exchange rules state that companies from outside the UK must have a minimum free float of 25 per cent. Shein is said to be valued at $66m (£52m), and surpassed $2bn (£1.6bn) profit on sales of $45bn (£35bn) …