Royal Bank of Scotland Group Plc, the second largest U.K. lender, may sell up to up to 10 billion pounds ($20 Billion) of stock to current shareholders to rebuild its capital reserves, the Financial Times reported.

The bank is considering various options, but the board has yet to make decisions, FT said on Friday citing people familiar with matter.

The stock rose 18 pence, or 4.92 percent to 384.00 pence on the London Stock Exchange. American Depositary Receipts of RBS rose 33 cents, or 4.44 percent to close at $7.76 on the New York Stock Exchange.

Chief Executive Sir Fred Goodwin has previously denied the need to raise capital through stock sales.

The bank is also mulling the sale of some businesses, including subsidiary Direct Line insurance, the report stated.