Teemu Selanne's decision on whether to return for an 18th season could be delayed after the forward underwent arthroscopic surgery on his left knee Wednesday. Selanne's agent, Don Baizley, confirmed to The Orange County Register that Selanne had surgery in Finland but did not offer any other specifics on the injury. Ducks GM Bob Murray did not want to speculate about the surgery but hinted that the procedure was more exploratory, according to the report. Selanne, who turns 41 on July 3, becomes an unrestricted free agent Friday.