There are some rumors going around that Pakistan and France may try to capture part of that deal. Pakistan may offer Indonesia Agosta 90B subs upgraded by the France that would be built in Karachi so the price would be much cheaper. However, these are just rumors and nothing concrete.
Which Chinese sub would Indonesia want to get? I think the only available one would be an upgraded Song Class sub. Forget the Yuan because there are only two in the PLAN right now and there hasn't been any reports of the Chinese trying to market the Yuan.