Even if Lewandowski stayed at Bayern, it would not change the problem that the club would be forced to deal with the problem of his departure. Well, if he left a year or two later (due to age) - I don’t see any fundamental differences. Top clubs solve the problem of leaving their stars in advance, for example, Real got rid of Ronaldo long before he passed his peak (or at least an acceptable level of play to be in Real) and nothing tragic happened to Real.
But of course it's funny that everything is shaping up so that in the end Ronaldo can be the savior of Bayern in the winter.
While you are correct in that it is counterproductive to talk about the past, I think you have a really great perspective on Cristiano Ronaldo joining Bayern Munich and I think you are really right. Since last season, CR7 has been wanting to get out of Manchester United as he has learned that United are not the team that will be able to compete in the Champions League, and he really wants to play in the Champions League. In my opinion, this could be a great option for both parties as Bayern Munich will be able to get a good striker for the next one or two years and Ronaldo will be able to play again in the Champions League.
Rather, not for a year or two, but for half the season and, at best, the next season. It seems that United were ready to release Ronaldo on loan, provided that Ronaldo extended the contract for another season. The idea was to bring him back if United won a ticket to the Champions League. Now the situation has changed, but a lot still depends on the results of United this season.
United is still having a chance to win a ticket to the champion league for the next season as long as this club can consistently winning the match against big club like city. United able to defeat arsenal and it was also able to do the same with city. MU has a big chance to make it happen. We know that if some big clubs like liverpools are starting to face difficult time to get full points in EPL. Remember that menchester city was also loosing against liverpool.
MU has more than enough to enter into the top 4 if the club will not face another lose or bad situation like early season.