Can you name the last clubs these players were with before joining Celtic?

Celtic fans, this quiz is for you.

We're giving you the names of 20 players who've played for Celtic. All you have to do is tell us the last club these players were with before joining the Hoops. Loan deals are not included. You have a full 15 minutes to answer as many as you can. Also, to help you out, we've included the country in which the club is located as a hint. That's all the clues you're getting! Best of luck and let us know how you get on.