‘As a restricted free agent, Malenstyn, 26, needed a new contract from the Washington Capitals. So when their assistant general manager called him during the NHL Draft on June 29, he initially thought little of it. Then after some chitchat, he informed the winger he had been dealt to the Sabres. “He had me stopped in my tracks,” Malenstyn said following Thursday’s session of training camp in KeyBank Center. “I was stumbling on words.”’