Goldman Sachs partner Sumit Rajpal to retire

(Reuters) - Goldman Sachs' Sumit Rajpal, one of three co-heads of a merged alternative investing unit at the bank set up last year, is to retire, a source familiar with the matter said.Business Insider, which was first to report Rajpal's resignation on Friday, said his departure leaves Andrew Wolfe as the most senior operating executive left from Goldman's old merchant banking division.The bank has not yet named his replacement, the source said.Rajpal had been slated to be a lead investor,..