Director Aashiq Abu will once again team up with superstar Mammootty for his next film titled Gangster. The film Gangster is expected to be one of the most stylish underworld films ever made in the country. Mammootty is playing the hero, it will also star Tamil actor Parthiban and renowned actress Rohini Hathangadi in important roles. However, the female lead is yet to be finalised. The film go on the floors very shortly.