There isn't any one player the Penguins could (realistically) obtain this offseason who will individually right the ship and put them back on the path to contention. It's going to take a number of savvy transactions to make that happen.
While I believe the Penguins' new general manager should look to shore up the No. 1 goalie spot and even potentially nab a top-four, left-handed defenseman via trade instead of overpaying the top free agents in a rather weak class, it simply won't be possible to fill every gap on the roster without dabbling in free agency somewhat.