Defensively, he was dire. His positioning and closing down is very poor. Hopefully he will get better with games, but his lack of Football over the last 12 months, shows.
He really wasn't that bad, considering he is fitting in to a new side and it was only his second match, he was better than the first match (granted not that hard to be) but I think his positioning being poor was due to his lack of football and fitness (as you also suggested) .
He looked a threat going forward and think he will still work out to be a good solid signing at the least