The biggest problem with Lewandowski has rather been to have a difficulty in scoring goals in big games in the Champions League. I watched him waste so many opportunities against big teams there which cost them high in the group stage later. I don't want to put the blame on only him of course don't get me wrong about that. The team effort was also inadequate in such games.
But in this season Xavi will be expected to do better in general as I said. Not only the team effort but also Lewandowski should make a big improvement in their performance in the Champions League. This level is still enough for the La Liga title but enough to be more successful in the Champions League.
In his first season, Lewandowski needed to adapt and also Barcelona's performance, especially in midfield, was not so good, so I think the supply for Lewandowski is still lacking. League, but if you look at Barcelona's development that was built by Xavi I'm sure that in the next season they will continue to grow and Lewandowski will of course still be their mainstay on the front lines, with the quality that Lewandowski has, it's not impossible that he will be much better this season front with adequate midfield supply.