LONDON (Reuters) -Shares in Metro Bank jumped in early trading on Monday, after the embattled British lender struck a fundraising deal overnight to bolster its balance sheet following urgent weekend talks in the wake of volatile trading. Metro announced a 325-million-pound ($396-million) capital raising exercise and a 600-million-pound debt refinancing on Sunday, in a deal that would hand majority shareholder control to its biggest investor, Colombian billionaire Jaime Gilinski. Gary Greenwood, banking analyst at Shore Capital, said the deal appeared to secure the bank's immediate futur...