Complex sentence: Damião was later assigned to "Peixe" in a free transfer, but the club will have to pay the company after the end of Damião's contract, with a 10% interest per year.
Split into simpler sentences: Damião was later assigned to "Peixe" in a free transfer. However, the club will have to pay the company after the end of Damião's contract, with interest at 10% per year.