I don't think he will ever repay, at best he will say he was hacked and he was not the one who took the loan.
I see also lenders are changing their policy to not accepting accounts as collateral, that is a wise decision as let's be honest the accountsa re not really worth it, anyone can make multiple accounts and upgrade them and take loans and default. Best collateral is an altcoin that has been established well and would easily fetch to the lender the value of his loan plus some extra for his time.