Ottawa Senators forward Jason Spezza will have back surgery Friday to repair a herniated disk. Senators general manager Bryan Murray said it’s too early to give a timeline for Spezza’s return, but the team is hopeful he’ll be play again this season. ‘‘It’s just the best thing to do at this point,’’ Murray said Thursday. ‘‘You probably could take days off and play a game here and there, but that doesn’t make any sense for him or us. So getting it done, hopefully getting it cleaned out, will allow him to come back at 100 percent and continue his career.’’ Spezza’s back problems flared Sunday in a shootout loss to Pittsburgh. He missed the next two games, after contributing two goals and three assists in five games this season. Spezza, 29, had 34 goals and 50 assists last season, finishing fourth in the NHL with 84 points . . . The Capitals traded center Zach Hamill, a former Bruins No. 1 draft pick (eighth overall in 2007), to the Panthers for forward Casey Wellman, a UMass product, in a swap of minor leaguers. The Capitals also acquired former University of New Hampshire forward Peter LeBlanc from the Blackhawks for future considerations . . . As expected, Greg Jamison missed his deadline to buy the Coyotes before a lease agreement with the City of Glendale, Ariz., expired. He had until midnight Thursday to buy the team under the terms of the lease, but was unable to get the money or investors he needed. He said will continue to attempt to purchase the team.