How to ask for a signed letter? Give it to Bayern.
Just send a letter to express your love for the club and the players, and don't ask for anything directly. Generally, if the club replies, it will give a signature or some small gifts in return. Now is a good time to write, because the response rate will be very low after the start of the new season. What is the address? bener Stra？ E 5 1, 8 1547 Munich