2001 Ford Mondeo drilling noise when trying to start.

My car wouldn't start a couple of months ago. I was told it was the starter motor so had that replaced. Went ok but yesterday decided it wouldn't start again. When i had the starter done, the mechanic told me the flywheel was the problem and it could stop at anytime and that it would be a big job £300 +.
I know that this problem can lead to the clutch going, so i just need advice on what would be the cheapest way of sorting this problem out. Could i have just the flywheel replaced ? - is it a solid or dual mass on this year of car ? Would it be better to pay for a flywheel and clutch kit and get the whole job done. It is all starting to confuse me a little so anyone with good advice or if you have had the same problem as i know it is common in these cars, look forward to your replies.