My job paid for my college, but I resigned and have to pay them back (to the tune of $20000). Is that deductible as education and moving expenses or otherwise?

I was under contract from my former employer to work for them for six years if they paid for my advanced degree.  I left work before the time was repaid, so I have to repay them for moving and tuition expenses, around $20000.  Since they initially paid for all my expenses, I never deducted anything related to my education for the last few years.  Can I somehow deduct this expense this year?