Robert Lewandowski is of course one of the greatest strikers now. He is getting older but his performance improves more in time. I think that he is better than last season now for example. He can break a new goal record in the Bundesliga if he goes on like that. Bayern Munich are really lucky to have him but he seems likely to leave this summer also I think. Actually it will depend on the offers for him. If he gets a really satisfying offer from another big club, then maybe he would make a change in his life from now on.
Robert Lewandowski has done great this season with Bayern Munich even though he has not surpassed the achievement he did last season with 41 goals, this season Lewandowski has scored 23 goals in the Bundesliga, previously, he managed to become the Bundesliga's top scorer 6 times, I am very sure that this season this time he will get the top scorer title again and will win it in a row (5 times in a row).
Lewandowski is the best striker in Germany, or would it be wrong if I say in the whole world?
He has been one of the most consistent footballers over the years. He showed his class while he was in Dortmund, the same thing for Bayern. He has been scoring goals in each game for them. If I were to name the top 3 players right now, he would surely be one of them. Manchester City seems interested in him, let's see what the future holds for him.