I make him a -23 which, given he had 28 goals, means he was on the ice for 51 goals against.
he played 75 games. So he was .68 goals against per game.
14:21 is his average time on ice. If my arithmetic is correct I think that makes him 2.9ish goals against per 60.
*caveat: I’m really tired so I could be totally wrong 😴