Tottenham star Davinson Sanchez claims Jose Mourinho stole the Europa League from him in 2017.
Sanchez was in the Ajax team that was beaten by Mourinho's Manchester United in the final that year.
The Colombian, who put in an excellent shift that night, felt his team should have won, even though they lost the game 2-0.
He told reporters: "Does it make me more motivated to win this trophy? Definitely! I know what it means to arrive in the final and try to get the trophy.
"That moment was not possible for me. But the good thing is I had the right person who in that moment just stopped me, stole my trophy in that moment.
"And that was the gaffer, who is here right now with me. So of course the motivation always is there when you are in a tournament that you had the chance to get it before.
"I think Tottenham is capable to do it. We are doing everything seriously to arrive in the final.
"It's a team that has the player as and the quality and the squad to do it, and of course the manager knows very well how to be there."
Sanchez added: "The Europa League is very important to us. The same as the FA Cup and the Carabao Cup.
"It has taken our best to get here but it's just what we deserve. We prepare well for every game we are facing.
"We will be ready for the occasion tomorrow. We know if we have the right attitude, we will face a good team and stop the problems they can create."