Following the activation of the buy-back clause by Bayern München, a loan to 1. FSV Mainz 05 has been discussed.

FC Bayern is likely to exercise its buy-back option on Armindo Sieb and then loan him out immediately. Mainz 05 is a potential recipient of the loan. Sieb is currently contracted with Greuther Fürth until 2025, but had moved to Fürth from Bayern in 2022. Bayern had secured a modest buy-back option of about 1.5 million Euros at the time.