No, for the following reasons:
- Presumably you are claiming him as a dependent on your return;
- He is not legally obligated to pay interest on the loan; and
- He did not pay the interest.
According to IRS Pub. 970 - Tax; Benefits for
Education:
Generally, you can claim the deduction if all of the following
requirements are met.
- Your filing status is any filing status except married filing
separately.
- No one else is claiming an exemption for you on his or
her tax return.
- You are legally obligated to pay interest on a qualified
student loan.
- You paid interest on a qualified student loan.
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