I think this year Barcelona has shown is in much better form than last year,they are doing quite well in La Liga and they only failed in Champions League against Inter and Bayern Munchen which are strong teams,much stronger than the actual ones in the Europa League.
Of course, if you look only at Barcelona's failure in the Champions League, the potential in the Europa League will be a little different. Barcelona can be more daring to compete because after his failure in the Champions League Xavi was determined to maximize the opportunities that exist today. Competitors in the Europa League are not comparable to clubs that have now qualified for the last 16 in the Champions League.
In my opinion, the opportunities for Barcelona in the Europa League are much more open.
If you talk about the strength of opponents who compete in the European League, of course here it can be said to be easier compared to clubs in the Champions League. I agree that their opportunities here are more wide open considering that the clubs here are dominated by clubs at a lower level than Barcelona. Xavi Hernandez must see this opportunity as a good opportunity for him to get at least 1 trophy this season by winning the Europa League title. Maybe at this level they can still show a better game than what they showed in the Champions League. In the Champions League they can only record 2 wins and that they get from the weakest club in the group.