lewandowski seems to have never played in the europa league before because he always played in the champions league with bayern munich and maybe this is the first time for him to explore the europa league competition with barcelona. There is no doubt about Lewandowski quality because he has been able to make a big contribution in every game he has played with Barcelona this season. So, for this season, the fans hope to see that Lewandowski is able to present a trophy for Barcelona.
Lewandowski has been motivated to tries to add his trophy collection to his library, Uefa Europa league is one he doesn't have which I think is a big desire to create many goals to Barcelona. But, the age factor is one condition he must think if want to continue in europa competition because there is a opponent that has golden age player who can be as competitor. Barca also have the attacker who can replace him any time if can give a contribution like Dembele, Raphinha, Depay and Torres.
Apart from wanting to find new challenges outside of the Bundesliga, Lewandowski goal is to come to Barcelona to add to his trophy collection with a different club. Lewandowski experience made him adapt very quickly to Barcelona, he also immediately became Xavi mainstay in Barcelona attack line. The Europa League trophy is still Barcelona priority, Lewandowski is very motivated to win his first trophy with Barcelona.
The age factor don't hinder Lewandowski's ability on the field in the slightest, he can still play for 90 minutes without any complaints. Of course Barcelona can't count on him much longer in their squad due to the age factor, as long as he can still make a good contribution to Barcelona, Xavi will continue to rely on him despite his old age.