Nathan Horton is making it tough for the Boston Bruins to consider letting him walk as an unrestricted free agent this summer. And yet, the Bruins might part ways with Horton anyways. Horton has excelled in the postseason with seven goals and 17 points in 16 games, but the Bruins are in a salary cap crunch. If they want him back, they're going to have to make room for him by trading someone or buying out a contract.