Harvey probably played for less than 45 minutes combined over the two games, so it's quite hard to judge if he was any good. He certainly did little of note - right or wrong - against Morton last week, but the management will have seen him in training and will have decided from that he wasn't good enough.
Worryingly, it seems the reason he wasn't signed his because we brought in Chris Innes last week. Does this mean we're going with just three central defenders for the new season?
Story source: The Official St. Mirren Website