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.
Lewandowski has not always been in consistent form this season, he has even been criticized by Xavi himself. So it is not surprising that Barcelona is now starting to distrust his services at the club. In my opinion, Lewandowski should leave immediately and let this club be run by young players. Moreover, the club's financial condition can no longer guarantee anything to pay players. Saudi Arabia has become Lewandowski place because at his age his services can still be utilized there.
He has never really been at the top level he used to be when he still played for Bayern Munich. Last season he was doing alright, but remember how many goals he scored for Bayern and then I am sure Barcelona was hoping for a striker who is similar to what Harry Kane is doing for Bayern now. But Lewandowski won't get to that level. He is not the only one to blame though as I think that the Barcelona team is not strong enough. They are not a 10/10 team, they are more like a 7.5/10 team. Of course strikers have a harder time then.