Hartford’s aging XL Center arena is now closer to a major renovation than it has been in a decade, after state lawmakers backed a plan that would allow at least $20 million in private investment for the $107 million project. The legislation, approved as part of the $51.1 billion state budget for the next two fiscal years, also includes another $15 million in public funding for a total of $80 million. The state approved $65 million in funds three years ago that would come from the proceeds of the sale of state bonds. Gov. Ned Lamont is expected to sign the legislation, passed by both the House and Senate this week. If all components fall into place, it will be essential to begin the renovations by the end of year to meet future revenue projections expected by OVG, Freimuth said. The makeover is expected to stretch out over two years to work around the hockey and basketball seasons.