After a flurry of trades and signings between the 2026 NHL Draft and the opening of unrestricted free agency on July 1, the New York Rangers and head coach Mike Sullivan will have plenty of decisions to make when it comes to establishing an identity and personnel for the fourth line in training camp.With the acquisitions of Pavel Dorofeyev and Oliver Bjorkstrand, the Rangers' top nine forward seem to be relatively set, with some mix of Mika Ziba…