NEW YORK, Nov 21 ― Citigroup CEO Jane Fraser and her executive management team announced yesterday the next layer of changes in a sweeping reorganisation, according to memos to staff seen by Reuters and sources familiar with the situation.

Executive management team members sent emails to subordinates outlining changes, according to one source familiar with the situation who declined to be identified discussing personnel matters. Leaders also held conference calls to discuss the changes, another source said.

"The actions we're taking to reorganize the firm involve some difficult, consequential decisions, but we believe they are the right steps to align our structure with our strategy,” Fraser said in a separate statement.

In the US personal banking division, some roles were merged and Brad Wayman was appointed as the new chief operating officer for the unit. The bank appointed Chris McCullough to succeed Wayman as head of mortgage and small business lending. Patrick Gallagher was appointed head of execution in the division. Two executives in the division, Dena Roten and Ryan Crowley, will transition out of their roles.

Citi will name one of its most senior bankers in Europe, Nacho Gutiérrez-Orrantia, new head of banking in the region, according to people familiar with the situation.

In his new role of head of the Europe cluster, the Spanish banker will look after Citi´s businesses in Europe. Citi declined to comment on specific names.

The full reorganisation could involve thousands of layoffs, according to a source familiar with the situation who was not authorized to speak publicly. On Monday, members of the executive managers had calls with their teams to explain the new structure in each division and say which people could have new roles, the source added.

In a memo to employees, Fraser said the final announcements related to the overhaul will happen early next year.

Preparations for yesterday's announcements were communicated verbally in meetings last week, according to another source familiar with the situation. Some staff may be able to apply for other roles at the bank, the source said.

Citi announced plans to cut management layers from 13 to eight as part of its biggest overhaul in decades. In the two top layers of leadership, Citi reduced 15 per cent of functional roles and eliminated 60 committees, it said in its third-quarter earnings presentation.

Support staff in compliance and risk management, and technology staff working on overlapping functions are at risk of being laid off, Reuters reported in September. ― Reuters