Explained: The add-ons Arsenal will pay to Sporting for Viktor Gyokeres after agent agrees commission reduction to finalise transfer

Arsenal have reached a full agreement with Sporting CP to sign Viktor Gyokeres in a transfer valued at €63.5 million (£55m/$74m) upfront, with an additional €10m (£8.6m/$12m) in performance-based add-ons. The final breakthrough came after protracted discussions over the structure and attainability of the bonus payments, which had previously stalled the move despite a general agreement on the main fee.