Actor Mahesh Manjrekar will reportedly portray late Shiv Sena founder Bal Thackeray in Emraan Hashmi and John Abraham starrer 'Mumbai Saga'. Manjrekar was roped in as a replacement for Jackie Shroff, who earlier stepped down from the film due to date issues. The film, which is directed by Sanjay Gupta, is set in the late 80-90s era of Mumbai.