Infosys crisis: ICICI Prudential, HDFC and Birla Sunlife figure in pro-Nilekani list

"The recent developments are very concerning to each one of us," the investors, comprising large mutual funds and insurance companies, said in their letter, adding Infosys should consider inviting Nilekani to the board in a "suitable capacity." Nilekani, one of the company's co-founders, who served as its CEO from 2002 to 2007, could not be reached for comment.

The investors, which include HDFC Asset Management, ICICI Prudential Asset Management and Birla SunLife Asset Management, among others, added that Nilekani's return would be welcomed as he enjoys the confidence of clients, shareholders and employees.

"Given his credentials, we feel, that his joining the board at this stage, will restore confidence of stakeholders in the company and also facilitate resolution of the contentious issues that Infosys is facing presently," said the funds in a letter, the contents of which were reviewed by Reuters.

The group of institutions, who have signed the letter to the Infosys board, together own roughly 10 per cent of the company's shares, according to Thomson Reuters data. Separately, local business news channel CNBC TV18 citing unnamed sources, reported on Wednesday that Nilekani was set to return to Infosys, without providing specific details.

Shares in Infosys which had fallen nearly 15 per cent in the first two days following Sikka's exit rallied 2 per cent on Wednesday following news that Nilekani may return -- a move that could well bring the acrimonious dispute to a close. The retired founder executives and their families together own about 12.75 per cent of Infosys' shares.