Yes, I also have to disagree that Barcelona was not motivated enough to win the Europa League because they can use any amount of money that they can get their hands on right now. It is obviously not the standards of Barcelona but right now the problem is they have lowered their standards themselves. And if they want to do well in the next season they would have eventually had to buy new players and the money that they could have earned winning the Europa League would have certainly helped them.
Actually, there might be motivation there because consciously or not they also needed an injection of funds at that time to make up for the loss because they failed in the Champions League which made them lose and they had a reason to win because at least the Europa League prize could be used as a patch there.
But the fact is that they have to accept an even harsher reality and have to fast for titles this season