Lewandowski is a difficult topic for Barcelona right now as on the one hand I think they wish he could perform outstandingly for maybe one or two seasons more until they really have a world class striker to substitute him. On the other hand the ties are getting loser between the player and the club as there have also been first arguments between Xavi and him and I think if Lewandowski doesn't score a lot of goals in the next few weeks, these cracks in their relationship will only get deeper and everything will get worse. I don't think they have a bright future together.
I personally think Lewandowski will be released this season to the Saudi Pro League the reason Lewandowski is no longer reliable and his contribution to the team has been low this season so it was the right choice to let him move, especially since the Saudi Pro club was willing to pay a high price to bring him in. Previously I checked the top scorer list and didn't see Lewandowski name so I assume he is no longer able to compete, Barcelona should realize that there is nothing more they can expect from this 35 year old man.
Ok I won't say that Lewandowski won't go to the Saudi Professional League, but from what I understood last time when he was approached by a club from Saudi Arabia is that he doesn't want to go to that country and play there. Now money can change his opinion, but I am sure the offer he received last time must have been huge if we take into account that Benzema also got such an amazing offer. He has two little girls as children and maybe he isn't the kind of guy to go there? That's an interesting question though.