March 1 (Reuters) - Goldman Sachs Group Inc’s global co-head of asset management arm, Eric Lane, will retire after more than two decades at the bank, according to a memo seen by Reuters on Monday. Over the coming weeks, Lane will work with Julian Salisbury, co-head of the division, to ensure a smooth transition, the bank said. Lane and Julian have brought together the bank’s merchant banking and asset management businesses, engaging directly with clients including sovereign wealth funds, public and private pension funds, and insurance companies, Goldman said. Lane has also served as co-head of Goldman’s consumer and investment management division among other leadership roles. (Reporting by Elizabeth Dilts Marshall in New York and Noor Zainab Hussain in Bengaluru; Editing by Vinay Dwivedi)