"Lender_portion_to_be_repaid" represents the portion of the outstanding loan to be repaid. It could be a potential leaky feature if it provides information that would not be available at the time of prediction, such as influencing the loan's repayment status. If this feature is highly correlated with the target variable (e.g., repayment success or default), it could lead to overfitting or unrealistic predictions. Carefully assess its relevance to ensure it doesn't introduce data leakage in your model.