First of all, It is important to say that we need to make this transition slowly, so neither to renew all the contracts nor let all of them to leave next season are good choices in my opinion.
Franck Ribery:
RENEW: He seems to have rejuvenated under Ancelotti, and every time I see him play even I realize how far away Costa and Coman are from reaching his level, we should keep him as much as we can, not only because I think we haven't found the right replacements for Robbery yet but also because he is a leader in the squad. A one-year deal is the best option.
Arjen Robben:
RENEW: We have seen how important is to have a guy like Robben when the most important part of the season arrives, he scored an important goal against Juve last season and he was on fire in the 2014/15 season until he got injured. Nevertheless, he has been struggling with injuries more often than never for the past two seasons, you just need to check how many knockout-stage matches he has played in the UCL the last 2 seasons, 3 out of 12 matches. So it's a difficult decision, I would go for a one-year deal with a considerable pay cut because I believe his quality could still be a factor in the UCL.
Holger Badstuber:
NOT SURE YET: Probably the most difficult choice out of the seven players who have their contracts expiring next season, he is one of the most loved players by the fans because he is a Bayern supporter and came off the youth team, but he has struggled with injuries for almost 4 years now. When he is fit he has shown to be a more than reliable option. He is about to comeback, but will he be able to stay fit for more than 4-5 weeks in a row? I would wait until the end of the season to make a decision on him and see whether he can play at least 20 matches this season. Even if has to retire due to injuries or the board decide not to offer Badstuber a contract extension, I'm 100% sure Bayern won't let him down, they will find him a job in the team as we have made with many former players.
Xabi Alonso:
DON'T RENEW: He has contributed with some quality goals here, however, he is not getting any younger (will be almost 35 at the beginning of the next season) and physically he can't play at this level anymore. I think we all agree he's being exposed more and more often even in Bundesliga matches. Kimmich is ready to take over his place but we still should be looking to sign someone with a similar gamestyle. It's a pity we didn't have him at his peak.
Rafinha:
DON'T RENEW: Many people don't like him, but he is a very reliable back-up player and has had to impose himself on this team with different coaches in order to get minutes. He is a hard-working guy and I think he has made a good job as a backup. That being said, he will be almost 32 by the end of the season and Lahm is retiring the following season so It's time to start scouting some young players now and sign one the next preseason (which won't be easy since there are not many promising right backs as far as I know). It will be much harder to replace both right backs in the same season. Kimmich has done a good job as a RB and could cover us in the meantime but I still prefer him playing as midfielder.
Julian Green:
DON'T RENEW: His inclussion in the first team was probably a marketing move or at least that is what I prefer thinking. Otherwise, I wouldn't know how to explain what Ancelotti sees in him, he simply is not good enough for Bayern, maybe could be a starter in some mid-table team in the Bundesliga or in other league. I admire his determination of trying to make It at Bayern, though.
Tom Starke:
DON'T RENEW: I don't know what he is still doing on the team, he is not playing any role on the team. He planned to retire last offseason but Bayern offered him a new contract. What for? When was the last time he played an official match? Not even Ulreich, our second option, played more than two matches in the whole season. We can perfectly use one of our young goalkeepers as 3rd option and give them some hope that they can make It to the senior team some day.
Sorry for my english
