Goldman Sachs Group Inc.’s asset management arm is reshuffling senior executives in its $110 billion private credit unit as it seeks to double the size of the business in the medium term, according to its global head of asset and wealth management. The revamp will see Greg Olafson become global head of private credit from his current role as co-president of alternatives, according to a memo seen by Bloomberg. Olafson will now spend all of his time on private credit—an area of expertise for him—as the bank focuses more resources and attention on the sector.