罗马诺：迪乌夫的最终转会费为2500万欧元，并已确保全额支付（罗马诺：迪乌夫转会费定为2500万欧元，全额支付已获保障）

Explaining transfer terminology

I'm setting up to give a clear explanation about "全额支付,” which typically means a guaranteed fixed fee without any contingent add-ons. I'll clarify that while payment tranches are scheduled, they're guaranteed. If add-ons are mentioned as “guaranteed,” it means they’ve been officially triggered. I’ll make sure to stick to the final answer style guidelines by being concise and bullet-pointing where helpful.

Next, I should ask any clarifying questions and outline my next steps for moving forward.