AP. Singh’s tenure as chief of CBI comes to an end in October this year, and already there are several contenders for the job. Four names are doing the rounds. Newly appointed Delhi Police Commissioner Neeraj Kumar, an AGMUT cadre IPS officer of the 1976 batch; ITBP Director General Ranjit Sinha, a 1974- batch official belonging to the Bihar cadre; National Investigation Agency Director S. C. Sinha, a 1975- batch official belonging to the Haryana cadre; and Vineet Kumar Gupta, a 1977- batch Gujarat cadre officer who’s currently special director in the CBI. Neeraj served in the CBI for nine years, and was instrumental in cracking several high- profile cases. Will he be the one?