A revival in European bank M&A deals has rekindled the prospect that British banks will be involved in the next round of takeovers, with Lloyds TSB a prime candidate to be in the sights of a predator. Spain's BBVA or another bidder could be lurking and willing to pay over $50 billion for a bank with a hefty pension deficit, a big insurance arm and which operates almost exclusively in the mature British market.Many analysts doubt the logic of a deal, but some warn not to be hasty in ruling out a bid.