Hallo!

I am in a bit of a dilemma!
My brother has been living in France for some considerable time and is now returning to the UK. In September 2006 he asked me to help him financially and lend him 30,000 Euros. I transferred this out to him via my bank. He has now sold his house in France and returning to the UK. Should I ask for 30,000 Euros back knowing that the exchange rate has significantly changed or should I just ask for the amount it cost me in Sterling to transfer the amount back in 2006? What would you do?
Thanks in advance.