Yes, that is why Barcelona managements are seriously working to ensure they end their financial crisis that is affecting the team not to perform well, because the players are not happy about the financial issues they are receiving from the managements. Now that Barcelona managements are fully ready to make the money available for the players to be pay on time, I think it will help the players to play with all their minds to ensure they achieve victory that will make their managements happy. I believe, this positive change will definitely help Barcelona to improve in this season, because it will really make their players to play with all their strength to ensure they embrace victory at the end of the tournament.
What you call working seriously, I call playing roulette. What they have done is to mortgage half the future to try to solve the disastrous financial situation of the present.
Something like if you borrow 25% of the income from your main source of income to spend the money this year on an investment in a business that is getting worse and worse.
If you do well, you will be able to repay the loan without any problems, but the minute something doesn't go as planned, in a fairly optimistic scenario, you are in trouble.
Players know this, and even if they are now going to be paid on time, or at least that is to be expected, they are under extra psychological pressure.