Unwinding the asset interest rate swap

Company A wants to buy $100 million worth of bonds and it enters an interest rate swap agreement with a Bank: the bank agrees to swap the fixed coupon payments Company A would receive with a floating rate of LIBOR + 0.2%. The swap has a maturity of 5 years. If company A wants to unwind the swap 2 years after making the swap deal, how could company A incur a loss of principle when the bank sells the bonds to break even (i.e. how would i know what price the bank would have to sell the swap in order for company A not to incur a loss of principle?)