Investa Bank SA Institución de Banca Múltiple is studying steps to renegotiate its agreed purchase of Deutsche Bank México SA Institución de Banca Múltiple, Bloomberg News reported, citing "people with direct knowledge of the matter."

The buying bank could aim to lower the $175 million purchase price of Deutsche Bank AG's Mexican unit, due to revenue losses from its operations on custodial services for foreign securities in the Mexican stock market amid regulatory changes, the people reportedly said.

Deutsche Bank México had earned commissions as custodian of a chunk of the securities registered in international quotations system SIC, which represents 35% of the Mexican stock exchange's operations. However, Mexico implemented new rules in June 2017 seeking to cut investor costs, eliminating banks from the role and transferring custody to the Mexican bourse's clearinghouse.

The agreement between Investa Bank and Deutsche Bank México has a provision allowing for the price renegotiation in case of changes in the value of the selling bank's businesses, one of the people said.

The deal had been expected to be completed by the end of 2017 or in the first quarter of 2018.