The Ghana forward has yet to feature for the Neroverdi since suffering a muscular injury in their 2-1 defeat against Parma last month.
Reports suggest that that he will stay out for between 40 and 50 days meaning he will be out until 2019.
De Zerbi has revealed that the former AC Milan has began rehabilitation, although no date has been set as to when the 32-year-old can start training.
“Our mentality must not change, whether we are losing or winning, when we will not be conditioned by the partial, then we will be mature.”
“Missing Djuricic for disqualification, in addition to Boateng, Boga, Adjapiong and Sernicola, Boateng started the rehabilitation process, I do not know when he comes back, but it’s not important when it’s important how he comes back. that at the beginning of the year has shifted the balance more, so we have to work to get it back to 100% ”