Complex sentence: In the meantime, Milan tried to re-negotiate the bid on a loan basis due to Cissokho's health concerns; as the parties failed to reach an agreement, Milan general manager, Adriano Galliani, subsequently announced the deal was cancelled.
Split into simpler sentences: In the meantime, Milan tried to re-negotiate the bid on a loan basis due to Cissokho's health concerns. As the parties failed to reach an agreement, Milan general manager Adriano Galliani announced the deal was cancelled.