Mats Hummels declined a transfer to Bologna last summer despite being very close to joining. He was impressed by the coach, staff, environment, and structure at Bologna but was not 100% convinced when it came time to say yes and thus declined the proposal. His decision was also influenced by the presence of De Rossi at Roma, whom he chose to join instead.

Mats Hummels had several interests, including Bologna, before eventually joining Roma. However, his decision to join arrived late, which might have affected his current form and playing time. There is a mention of him not being included in the squad for the last match against Monza.