2.0T is a standard chain driven camshaft.
The engines seem strong. The Swedes have taken them over 400hp! With mods! But the block is good. If it's a manual, it might be on the limit of the clutch. But check it in reverse uphill around a corner. If it goes jumpy on you, walk away. The rear drive stuff may need replacing. A new box is £3k. If it's smooth, then make sure the fluids are changed at 35,000 miles. It's not part of the Saab service schedule, but it seems to be gaining credence in the specialist market.