Fate of Hartford arena uncertain as possible sale explored 

HARTFORD — The future of Hartford’s downtown arena still remains uncertain, even though $40 million in state bonding has been approved to help fix up the aging XL Center.Connecticut lawmakers included one stipulation for those funds. They want a “request for proposals” issued to determine if there’s a buyer for the coliseum complex. That sidelines — at least for now — Democratic Gov. Dannel P. Malloy’s original proposal to spend $250 million to tot